Advantech Modem ADAM 4550 User Manual

ADAM-4550  
Radio Modem Module  
(RS-232/485 Interface)  
User’s Manual  
Printed in Taiwan October 1997  
ADAM and the ADAM logo are trademarks of Advantech  
Part no. 2000455000  
2nd Edition  
 
FCC Identification  
MKZAZY4550MDM  
FCC Warning  
This equipment has been tested and found to comply with the limits for a Class A digital device,  
pursuant to Part15 of the FCC Rules. These limits are designed to provide reasonable protection  
against harmful interference when the equipment is operated in an industrial / commercial installa-  
tion. This equipment generates, uses, and can radiate radio frequency energy and, if not installed  
and used in accordance with the instruction manual, may cause harmful interference to radio com-  
munications. Operation of this equipment in a residential area is likely to cause harmful interfer-  
ence in which case the user will be required to correct the interference at his own expense. How-  
ever, there is not a guarantee that interference will not occur in a particular installation.  
 
ADAM-4550 User's Manual  
3
1. Introduction  
1.2 Features  
Built-in microprocessor  
ADAM-4550 is an economical, wireless RS-232/  
485 converter designed to interface any bidirec-  
tional RS-485 device with a control center host  
computer. The ADAM-4550 can be used in data  
acquisition where data sensors are inaccessi-  
ble to the host computer due to wiring difficul-  
ties or long distances that make wiring impracti-  
cal or impossible.  
Data transmission speeds up to 115.2 Kbps  
Built-in RS-485 line surge protection  
Software configurable address and baud rate  
Easily mounted on DIN rails, panels or as a  
piggyback unit.  
All communication setup information stored  
1.1 Built-in Intelligence  
on system EEPROM  
The ADAM-4550 is equipped with an on-board  
microprocessor and a radio-frequency (RF)  
module that can be used to interface one host  
computer with multiple RS-485 networks. Each  
RS-485 network can be used to support numer-  
ous data acquisition devices.  
Automatically sets RS-232 port to DTE/DCE  
and automatic RS-485 data flow control  
Can be used as point to point or point to  
points communication  
Can be operated with address or without  
address  
 
4
ADAM-4550 User's Manual  
1.3 Specifications  
Standard accessories: Nylon DIN-rail  
mounting adapter, SECC panel mounting  
bracket  
Transmission speed (bps): 300, 600, 1200,  
2400, 4800, 9600, 19.2K, 38.4K, 57.6K,  
115.2K (transmission speeds are software  
configurable)  
RS-232 interface connector: DB-9  
(female)  
Radio frequency : 2.442 GHz, Direct  
RS-485 interface connector: Plug-in screw  
Sequence Spread Spectrum (DSSS)  
type terminal [accepts AWG 1-#12 or 2-  
#14~#22 (0.5 to 2.5 mm2) wires]  
Radio bandwidth : 22 MHz  
Radio transmission power: 100 mW nom-  
inal  
Operating temperature: -10o to 70o C  
Power consumption : 4 W  
Communication distance: 550 ft. effective  
range (under open site test with 2 dBi omni  
antenna). Actual distance depends on en-  
vironmental conditions, antenna type and  
positioning.  
Radio transmission rate: 1 Mbps  
Power requirement: Unregulated (+10VDC  
to +30VDC) with protection from power re-  
versals  
Case: ABS with captive mounting hardware  
 
ADAM-4550 User's Manual  
5
2. Installation  
ripples must be limited to 5 V peak to peak, while  
voltage must in all cases remain between +10  
and +30 VDC. All power supply specifications are  
referenced at the module connector.  
2.1 Basic Configuration  
Before installing the ADAM-4550 in an existing  
network, the ADAM-4550 unit should be pre-  
configured. Though all modules are initially pre-  
configured at the factory, it is recommended that  
you check the baud rate settings.  
Power cables should be selected according to  
the number of modules connected and the length  
of the power lines. When using a network with  
long cables, we advise the use of thicker wire to  
limit the line voltage drop. In addition to serious  
voltage drops, long voltage lines can also cause  
interference with communication wires.  
Factory Default Settings:  
Baud Rate: 9600 bps (both RS-232 and RS-485)  
Delimiter: {  
We advise that the following standard colors (as  
indicated on the modules) be used for power  
lines:  
Address: 00  
+Vs  
ð (R) Red  
2.2 Power Supply  
GND ð (B) Black  
For ease of use in industrial environments,  
ADAM modules are designed to accept industry  
standard +24 VDC unregulated power. Modules  
are certified for operation with any power sup-  
ply source between +10 and +30 VDC. Power  
 
6
ADAM-4550 User's Manual  
2.3 RS-485 Communication Wiring  
Note: 1. Before turning on the power and  
configuring the ADAM-4550, make sure it is  
connected to your host computer through an  
RS-232 cable and that the host computer is  
on. The ADAM-4550 will automatically detect  
the cable and set itself as a DTE/DCE  
according to the RS-232 port of the connected  
host computer. If there is no RS-232 cable  
connected to the host computer, the ADAM-  
4550 will set itself as a DCE when you turn on  
the power.  
For RS-485 wireless transceiver applications,  
the user can leave the RS-232 port opened.  
The ADAM-4550 should set RS-232 as a DCE  
after power is turned on.  
2. The pin INIT (pin 6) should be grounded while  
you turn on the power of ADAM-4550 for config-  
uration. For normal operation, just leave INIT  
(pin 6) open while you turn the power on.  
We recommend using shielded-pair cables which  
comply with the EIA RS-485 standard to reduce  
interference in an ADAM network. Only one set  
of twisted-pair cables is required to transmit both  
DATA and RTS signals. We advise that the fol-  
lowing standard colors (as indicated on the mod-  
ules) be used for the communication lines:  
DATA+ð (Y) Yellow  
DATA- ð (G) Green  
2.4 Software Configuration  
The ADAM-4550 comes with a setup disk that  
contains software for the following:  
Baud rate configuration  
Address configuration  
Statistical RF error rate retrieval  
Firmware upload tool for firmware upgrades  
 
ADAM-4550 User's Manual  
7
2.5 Configuring ADAM-4550  
4. You must now search your unit for its cur-  
rent settings. To do this, select the Setting...  
menu and choose Get. Enter a starting ad-  
dress into the dialog box or use the default  
start address 0. Click the OK button. The  
configuration software will scan the unit for  
the address by matching the unit’s address  
with each address number between the start-  
ing address and 255. If the unit’s address  
is found, its ID address, baud rate and de-  
limiter settings will be displayed.  
1. Insert the ADAM-4550 disk in drive A. Start  
Microsoft Windows. From the Program  
Manager, select the File menu and choose  
Run. Type a:\ADAM4550 and press EN-  
TER. The ADAM Configuration and Diag-  
nostics window should now open.  
2. You must now set the host computer’s port  
configuration before configuring your ADAM-  
4550. To configure your host communica-  
tion port, select the Setting... menu and  
choose Local. A dialog box will open. Se-  
lect the proper COM port that is connected  
to the ADAM-4550 and set the baud rate to  
9600. Click the OK button.  
5. You may now change the settings. To  
change the configuration, select the Set-  
ting... menu and choose Set. A dialog box  
will open. Enter the new configuration set-  
tings (new address, identification, new baud  
rate, master/slave) and click the OK button.  
Follow the procedure in the Search section  
to get the new desired configurations.  
3. Connect your PC’s RS-232 serial port to  
ADAM-4550’s RS-232 port. Connect the  
INIT pin with the ADAM-4550’s ground pin.  
Turn on the power. The unit is now in con-  
figuration mode. The green LED light should  
blink slowly.  
 
8
ADAM-4550 User's Manual  
2
3
7
8
4
6
5
RX  
2
3
7
8
4
6
5
RX/TX  
RF  
Module  
RF  
Module  
DATA+  
DATA-  
TX  
TX/RX  
RS-485  
RTS  
CTS  
DTR  
DSR  
GND  
CTS/RTS  
TRS/CTS  
DSR/DTR  
DTR/DSR  
GND  
PC  
DATA+  
DATA-  
RS-485  
DATA+  
DATA-  
RS-485  
RS-232 Connector  
RS-232  
ADAM-4550  
ADAM-4550  
ADAM-4011  
Note: The RS-232 cable does not have to be  
a null-modem cable. The ADAM-4550  
will automatically detect and set itself  
as a DCE.  
Figure 1: Basic Connection Diagram  
 
ADAM-4550 User's Manual  
9
Figure 2: Pin Assignment  
 
10  
ADAM-4550 User's Manual  
Note: 1. The address between F8h and FFh  
are used for non-addressable modules.  
The addresses for addressable modules  
are between 00h and F7h.  
dress. If the unit does not respond, a  
scanning address dialog box will appear.  
Click OK in the box to start the scan-  
ning process. Now the configuration  
software will scan for ID addresses be-  
tween 0 and 255. The current settings  
of the unit will be displayed when the  
units address is found. Users can also  
change the time-out value in the scan-  
ning dialog box to allow more scanning  
time for the configuration software.  
2. The ADAM-4550 can be configured  
as either a MASTER type module or a  
SLAVE type module. The MASTER  
ADAM-4550 is the module connected to  
the host PC. The SLAVE ADAM-4550s  
are those connected to remote RS-485  
devices or other ADAM series products.  
Run your configuration program  
ADAM4550.EXE to set the unit to the  
correct type.  
2.6 Uploading a New Version of Firmware  
1. Follow the procedures in sections A.1 and  
A.2 and start the Adam Configuration and  
Diagnostic Program.  
6. Disconnect INIT pin from the ground pin af-  
ter configuration is complete.  
2. Select the Setting... menu and choose Lo-  
cal. A dialog box will open. Select the  
proper COM port connected to the ADAM-  
4550 and set the baud rate to 9600. Click  
the OK button.  
Note: During the Get or Set configuration pro-  
cess, the configuration software will au-  
tomatically search the unit for current  
settings using a certain default ID ad-  
 
ADAM-4550 User's Manual  
11  
3. Select the Upload menu. A dialog box will  
open. Enter the file name where the firm-  
ware to be uploaded is located. Click the  
OK button to begin uploading. The green  
LED light on ADAM-4550 now changes to a  
steady glow. When uploading is complet-  
ed, the green LED will turn off. Turn off your  
ADAM-4550’s power and then turn the power  
on again to complete the uploading process.  
The ADAM-4550 unit is now ready to be  
configured. Follow procedures in section A  
to re-configure the unit.  
Total Received Packets indicates the total num-  
ber of packets received by the selected ADAM-  
4550 unit.  
CRC Error indicates the number of received  
packets with the CRC checking error.  
Check Sum indicates the number of received  
packets with the Check Sum error.  
Transmit acknowledged indicates the total  
number of acknowledged packets received by  
the selected ADAM-4550 unit from the remote  
ADAM-4550 unit.  
2.7 Using the Diagnostics Functions  
Transmit retransmitted indicates the total num-  
ber of retransmitted packets sent out from the  
selected ADAM-4550 unit due to poor link qual-  
ity (i.e. no acknowledgment received).  
Start the ADAM Configuration and Diagnostic  
Program. Select the Diagnostics menu. A di-  
alog box will open. Enter the selected ADAM-  
4550 unit ID address and the communication  
port baud rate. Click the OK button. The RF  
link quality indicator will be displayed:  
 
12  
ADAM-4550 User's Manual  
2.8 Antenna Installation  
Note : 1. While using directional antennas, care  
should be taken to install and adjust the anten-  
nas direction according to the instructions of  
the antenna’s manufacturer. Please see the  
example specification for an external 24 dBi an-  
tenna at appendix A.  
Indoor communication distance is about 300 to  
550 ft. using a standard 2 dB antenna. Howev-  
er, actual distance depends on environmental  
conditions as well as antenna type and position-  
ing.  
2. A user’s license may be required to use a  
directional antenna. Please consult your local  
authority for local regulations.  
Longer communication distances can be  
achieved by using an antenna with a higher gain.  
A table of communication ranges as a function  
of differing combinations of antennas (at the  
source and receiving ends) is displayed below.  
3. We strongly recommend that you install  
ADAM-4550 as near as possible to its antenna.  
Where the antenna has to be located at a dis-  
tance from the ADAM, special RF cable is re-  
quired. Please see the example cable connec-  
tion arrangement in appendix B.  
Antenna  
Gain at  
24 dB  
directional  
18 dB  
directional  
11 dB omni-  
directional  
either end  
24 dB  
directional  
10 Km  
5 Km  
5 Km  
2.5 Km  
1 Km  
2 Km  
1 Km  
4. Omnidirectional antennas should be used  
when the ADAM-4550 communicates with more  
than one other ADAM-4550 unit located in dif-  
ferent directions.  
18 dB  
directional  
11 dB omni- 2 Km  
directional  
0.5 Km  
 
ADAM-4550 User's Manual  
13  
3. Using ADAM-4550  
connected to the controlling PC, as well as the  
green LEDs on the remote ADAM-4550 units  
should now be in a rapid blinking mode. This  
indicates that the RF links between the control-  
ling unit and all the remote units have been es-  
tablished.  
Connect one ADAM-4550 to the controlling PC’s  
serial port with the RS-232 cable. Connect re-  
mote ADAM-4550 units to remote data units  
through the RS-485 bus.  
Configure each ADAM-4550 unit by following the  
procedures in section A.  
Note: It is important that during the initial set-  
up, the ADAM-4550 unit connected to  
the controlling PC must be powered up  
before the other remote ADAM-4550  
units are powered up. Moreover, any  
devices connected to an ADAM-4550  
through RS-232 must be powered on be-  
fore the ADAM-4550 is powered on.  
This will allow the ADAM-4550 to auto-  
matically detect the connected device  
and set itself into proper DCE or DTE  
modes.  
Start the ADAM Configuration and Diagnostic  
Program on the controller PC. Select the Set-  
ting... menu and choose Local. In the dialog  
box, select the proper COM port and set the baud  
rate to the one configured for the ADAM-4550.  
Make sure all ADAM-4550 units are powered  
off. From the ADAM Configuration and Diag-  
nostic Program, select the Connections menu  
and choose Connect. Turn on power to the  
ADAM-4550 connected to the controlling PC and  
the green LED should blink slowly. Turn on the  
power to the remote ADAM-4550 units one by  
one. The green LED on the ADAM-4550 that is  
 
14  
ADAM-4550 User's Manual  
aa  
SLAVE  
RS-485 DEVICES  
ADAM-4550  
MASTER  
115.2 kbps  
115.2  
kbps  
ADAM-4550  
ADAM-4550-00  
SLAVE  
PC  
RS-485 DEVICES  
ADAM-4550-S  
RS-232  
ADAM-4550  
AA  
ADAM-4550-01  
115.2 kbps  
Type { aaDDD....(cr)  
Type { AADDD....(cr)  
Figure 3: Test Sample  
 
ADAM-4550 User's Manual  
15  
3.1 A Test Sample  
1. Follow procedures in section C to install one  
ADAM-4550 unit as the MASTER module  
for a controlling PC and two ADAM-4550s  
as SLAVEs for the remote devices (see Fig.  
3).  
2. Start the ADAM Configuration and Diagnos-  
tic Program on the controlling PC. Select  
Generate-Traffic menu and choose Send  
One Packet. In the window area type in  
{AADDD...... (cr)} where { is the delimiter  
selected when configuring the ADAM-4550  
units, AA is the hexadecimal unit ID address  
and DDD...... is the data. The transmitted  
data DDD...... should be displayed on the  
PC monitor connected to the remote  
ADAM-4550.  
 
ADAM-4550 User's Manual  
16  
4. ADAM-4550 Command Set  
two-character address (hexadecimal) that spec-  
ifies the target module. Depending on the com-  
mand, an optional data string follows the com-  
mand string. Every command is terminated by  
a (cr) carriage return. Command sets are divid-  
ed into two categories: configuration mode  
commands and data pass mode commands:  
In order to avoid communication conflicts, all  
actions are instigated by the host computer when  
several devices attempt to send data at the same  
time . The basic form is a command/response  
protocol with the host initiating the sequence.  
The host issues a command to a module with a  
specified address and waits a specific amount  
of time for the module to respond. If no re-  
sponse is received, a time-out command aborts  
the sequence and returns control to the host.  
Syntax  
[delimiter character] [address] [command] [data]  
[carriage return]  
Every command begins with a delimiter charac-  
ter. Most of the commands can use a $ (dollar  
sign) or a % (percentage sign), but the Data Pass  
mode command uses one of eight special char-  
acters. The delimiter character is followed by a  
 
ADAM-4550 User's Manual  
17  
Configuration Mode Commands  
Command Syntax  
Command Name  
Description  
%AANNTTCCFFPP(cr) Sets new configuration  
Requests to set new address, baud rate at module AA  
Requests to get current configuration from module address AA  
Sets the identification data (0 to 16 bytes) to module at address AA  
Reads the identification data from the module at address AA  
$AA2(cr)  
Reads configuration  
Writes identification  
Reads identification  
Sets the delimiter  
$AA6(ID string)(cr)  
$AA7(cr)  
$AACD(cr)  
Sets the delimiter character (":", "[", "]", "^", "{", "}", "~", "|" ) for Data  
Pass mode commands  
$AAD(cr)  
Reads the delimiter  
Reads delimiter character from the module at address AA  
$AAF(cr)  
Reads firmware version Reads the firmware version number  
$AAM(cr)  
Reads module name  
Starts uploading  
Reads the model name of the module  
$AAL(cr)  
Starts uploading of new firmware to the module at address AA  
&AAAD1D2(cr)  
Sets Data Gate  
command  
Requests the module at address AA to set Data Gate to Open(1) or  
Close(0)  
&AAB(cr)  
Reads Data Gate Status Requests the module at address AA to return Data Gate status  
 
ADAM-4550 User's Manual  
18  
Data Pass Mode Commands  
Command Syntax  
{AADD(cr)  
                                                      
C
                                                        
o
                                                          
m
                                                             
m
                                                                
a
                                                                  
n
                                                                    
d
                                                                        
N
                                                                          
a
                                                                            
m
                                                                               
e
                                                                                             
D
                                                                                                
e
                                                                                                  
s
                                                                                                    
c
                                                                                                      
r
                                                                                                       
i
                                                                                                        
p
                                                                                                          
t
                                                                                                           
i
                                                                                                            
on  
                                                                                                              
Sends data to remote  
Sends data string DD through the remote module at address AA  
&AAQ(cr)  
Gets error rate statistics Gets RF error rate statistics from the module at address AA  
&AAAD1D2(cr)  
Sets Data Gate  
command  
Requests the module at address AA to set Data Gate to Open(1) or  
Close(0)  
&AAB(cr)  
Reads Data Gate Status Requests the module at address AA to return Data Gate status  
Note: All commands should be issued in upper case letters.  
 
ADAM-4550 User's Manual  
19  
Baud rate code are listed below:  
7 6 5 4 3 2 1 0  
RS-232 RS-485  
Command Descriptions  
4.1 Set New Configuration  
Code  
01  
Baud rate  
300 bps  
Description Requests to set new baud rate,  
new address… for module.  
02  
03  
04  
05  
06  
07  
08  
09  
0A  
600 bps  
Syntax  
%AANNTTCCFFPP(cr)  
1200 bps  
2400 bps  
4800 bps  
9600 bps  
19200 bps  
38400 bps  
57600 bps  
115200 bps  
AA: module address ( 2 char-  
acters hexadecimal )  
NN: new module address  
TT: set to 0x40(H)  
CC: High 4 bits represents RS-  
232 baud rate code for module.  
Low 4 bits represents RS-485  
baud rate code for module.  
Currently, RS-232 and RS-485  
ports have the same baud rate.  
 
ADAM-4550 User's Manual  
20  
FF : ADAM-4550 mode configuration  
Response !AA(cr) if the command is valid  
?AA(cr) if an invalid command is  
entered  
Example  
Command:  
%0A1B40AA2103(cr)  
Response:  
!0A(cr)  
The ADAM-4550 module with  
address 0Ah is configured to a  
new address 1Bh and the baud  
rate is set to 115.2 Kbps.  
RS-232 data format is fixed to N,  
8, 1.  
PP: RS-232/RS-485 data format. It is currently  
a fixed number.  
 
ADAM-4550 User's Manual  
21  
4.2 Read Configuration  
4.3 Write Identification  
Description Requests to read the current  
baud rate and address from the  
module.  
Description Requests to assign identification  
data to the module at address  
AA. The identification character  
lengths can range from 0 to 16  
bytes including carriage-return.  
Syntax  
$AA2(cr)  
AA: module address ( 2 hexa-  
decimal characters )  
Syntax  
$AA6(identification  
characters)(cr)  
Response !AATTCCFFPP(cr) if the com-  
mand is valid (refer to “Set New  
Response !AA(cr) if the command is valid  
Configuration” in Command Set)  
?AA(cr) if an invalid command is  
entered  
?AA(cr) if an invalid command is  
entered  
Example  
Command:  
$0A6ADAM4550 Unit#1(cr)  
Example  
Command :  
Response:  
$0A2(cr)  
Response:  
!0A(cr)  
!0A40AA2103(cr)  
 
ADAM-4550 User's Manual  
22  
4.4 Read Identification  
4.5. Set Delimiter Character  
Description Requests to read identification  
data from the module at address  
AA.  
Description Requests to assign a new delim-  
iter character to the module at  
address AA.  
Syntax  
$AA7(cr)  
Syntax  
$AACD(cr)  
Response !AA(identification characters)(cr)  
D: delimiter character selected  
from ‘:’,‘[‘, ‘]’,‘^’, ‘{‘, ‘}’, ‘|’, ‘~’  
if the command is valid  
?AA(cr) if an invalid command  
is entered  
Response !AA(cr) if the command is valid  
?AA(cr) if an invalid command  
is entered  
Example  
Command: $0A7(cr)  
Response: !0AADAM4550  
Unit#1(cr)  
Example  
Command:  
Response:  
$0AC[(cr)  
!0A(cr)  
 
ADAM-4550 User's Manual  
23  
4.6. Read Delimiter Character  
4.7. Set Data Gate  
Description Requests to read the delimiter  
character data from the module  
at address AA.  
Description Requests the module at address  
AA to set data gate to open(1) or  
close (0).  
Syntax  
$AAD(cr)  
Syntax  
&AAAD1D2(cr)  
Response !AA(delimiter character)(cr) if the  
where AA is the module address  
D1 = 1 Open data gate  
D1 = 0 Close data gate  
D2 = 1 Write to Flash memory  
command is valid  
?AA(cr) if an invalid command  
is entered  
Example  
Command:  
Response:  
$0AD(cr)  
!0A[(cr)  
D2 = 0 Do not write to Flash  
memory  
Response !AA(cr) if the command is valid  
?AA(cr) if an invalid command is  
entered  
Example  
Command: &0AA00(cr)  
 
ADAM-4550 User's Manual  
24  
Response:  
!0A(cr)  
Note: 1. If the command asks the module to  
write to FLASH memory, the status will  
remain at Open Gate/Write to FLASH  
when the power is turned off and then  
on again.  
The command asks the module  
at address 0Ah to close the data  
gate and not to write to FLASH  
memory.  
2. If the command asks the addressable  
module to open the data gate, the mod-  
ule will automatically assume non-ad-  
dressable mode. This enables the mod-  
ule to issue commands without adding  
{AA until the user issues another com-  
mand to close the data gate.}  
Command: &0AA11(cr)  
Response: !0A(cr)  
The command requests the  
module at address 0Ah to open  
the data gate and write to Flash  
memory.  
 
ADAM-4550 User's Manual  
25  
4.8. Read Data Gate Status  
4.9. Read Firmware Version  
Description Requests the module at address  
Description Requests to read the ADAM-  
4550 firmware version number  
AA to return data gate status.  
from the module at address AA.  
Syntax  
&AAB(cr)  
Syntax  
$AAF(cr)  
Response !AAS(cr) if the command is val-  
id where  
Response !AA(version number)(cr) if the  
S = 1 open data gate  
command is valid  
S = 0 close data gate  
?AA(cr) if an invalid command is  
entered  
?AA(cr) if an invalid command is  
entered  
Example  
Command:  
Response:  
$0AF(cr)  
Example  
Command: &0AB(cr)  
Response: !0A0(cr)  
!0AA1.0(cr)  
The module returns that current  
data gate status is close.  
 
ADAM-4550 User's Manual  
26  
4.10. Read Module Name  
4.11. Uploading  
Description Requests to read the module  
name from the module at ad-  
dress AA.  
Description Requests to upload new firm-  
ware to the module at address  
AA.  
Syntax  
$AAM(cr)  
Syntax  
$AAL(cr)  
Response !AA(module name)(cr) if the  
Response !AA(cr) if the command is valid  
command is valid  
?AA(cr) if an invalid command  
is entered  
?AA(cr) if an invalid command  
is entered  
After having received ‘!AA(cr)’  
response, the host computer  
starts to send 2 bytes Hi-Lo data  
length followed by the firmware  
binary data. If the host receives  
response ‘?AA(cr)’ or no re-  
sponse, it will stop sending the  
binary data.  
Example  
Command:  
Response:  
$0AM(cr)  
!0A4550(cr)  
 
ADAM-4550 User's Manual  
27  
Example  
Command : $0AL(cr)  
Response : !0A(cr)  
can send the data to module AA  
without {AA.  
Syntax  
{AA(Data string)(cr)  
command : 0A 80 12 34 56  
..................... length 2688  
bytes followed by data 12h 34h  
{ — one of the eight optional de-  
limiters which is configured into  
the module  
4.12. Send Data to Remote  
Example  
Command :  
Description Send the DATA to RS-485 de-  
vice through the remote module  
at address AA  
{0C123456abcdABCD(cr)  
The command sends data  
‘123456abcdABCD(cr)’ through  
the local ADAM4550 and the re-  
mote ADAM-4550 module at ad-  
dress 0Ch to a connected RS-  
485 device.  
This command only works in  
Data Pass mode. The user can  
use the “Set Data Gate” com-  
mand to open the data gate of  
the module at AA so that you  
 
ADAM-4550 User's Manual  
28  
4.13. Get Error Rate Statistics  
Total number of checksum error  
packets received : 2 bytes  
Description Requests to get the current RF  
error rate statistics from the  
Total number of good packets  
received: 4 bytes  
module at address AA.  
This command only works in  
Data Pass mode.  
Total number of transmit ac-  
knowledged packets: 4 bytes  
Syntax  
&AAQ(cr)  
Total number of transmit re-  
transmitted packets: 4 bytes  
Response !AAQ(statistic data)(cr) if the  
command is valid  
Note: All data in Hi-Lo format  
?AA(cr) if an invalid command  
is entered  
Example  
Command : &0AQ(cr)  
Response : !0AQ0A 00 00 00  
01 00 00 00 09 00 00 00  
1A 00 00 00 05 00 00 00(cr)  
The statistic data format is in the  
following order:  
Total number of packets: 4  
bytes  
The underlined portion of the  
above response is used to show  
binary data. In this example:  
there are 10 packets received, 1  
of them is the CRC error, no  
Total number of CRC error pack-  
ets received: 2 bytes  
 
ADAM-4550 User's Manual  
29  
checksum error and 9 good  
Appendix A: External Antenna Options  
packets. There are 26 packets  
that were transmitted from this  
module that received acknowl-  
edgment. There are 5 retrans-  
mitted packets due since no ac-  
knowledgment was received.  
8 dBi Omni-Directional Antenna  
Electrical Specifications:  
Frequency:  
Gain:  
2.4 to 2.483 GHz  
8 dBi  
3 dB beamwidth:  
15° in elevation plane, uni-  
form in azimuth plane.  
VSWR:  
1.5:1 max @ 50 ohm  
Vertical  
Polarization:  
Mechanical Specifications:  
Antenna Type:  
Size:  
Colinear  
750 mm  
Weight:  
1.5 kg  
Connector:  
Type N Female  
Environmental Specifications:  
Windload:  
Humidity:  
240 km/hr.  
100%  
 
ADAM-4550 User's Manual  
30  
11 dBi Omni-Directional Antenna  
Electrical Specifications:  
24 dBi Grid Parabolic Reflector Directional  
Antenna  
Frequency:  
Gain:  
2.4 to 2.483 GHz  
11 dBi  
Electrical Specifications:  
Frequency:  
Gain:  
2.4 to 2.483 GHz  
24 dBi  
3 dB beamwidth:  
9° in elevation plane, uni-  
form in azimuth plane.  
3 dB beamwidth:  
Sidelobe level:  
10°  
VSWR:  
1.5:1 max @ 50 ohm  
RHCP  
-20 dB  
Polarization:  
Front-to-back ratio: 28 dB minimum  
Mechanical Specifications:  
VSWR:  
1.5:1 max @ 50 ohm  
Vertical/Horizontal Linear  
Antenna Type:  
Size:  
Colinear  
Polarization:  
1500 mm  
0.9 kg  
Cross Polarization: 28 dB minimum  
Weight:  
Mechanical Specifications:  
Connector:  
Type N Female  
Antenna Type:  
Size:  
Wire Grid Parabola Reflector  
Environmental Specifications:  
686 x 813 mm  
2.4 kg  
Windload:  
Humidity:  
200 km/hr.  
100%  
Weight:  
Connector:  
Type N Male  
Environmental Specifications:  
Temperature:  
Humidity:  
-40 to +80° C  
100%  
 
ADAM-4550 User's Manual  
31  
Appendix B: External Antenna Wiring Diagram  
To Antenna  
20' RF Cable Type  
Female to Type  
N
Male  
20' RF Cable Type  
N
N
Male to Type Male  
N
Or  
Lightning Arrester  
3' RF Cable  
adapter  
ADAM-4550  
20' RF Cable Type  
Female to Type  
N
Male  
N
* Not for applications in the U.S. or EC countries.  
 
ADAM-4550 User's Manual  
32  

Aastra Telecom Telephone 8004 User Manual
Abocom Network Router PL1000 User Manual
Access Microscope Magnifier IOD 144 User Manual
Addonics Technologies Computer Drive AESN5DA35 User Manual
ADTRAN Network Router 1200263L1 12A User Manual
Aiphone Intercom System TC ME SET User Manual
Airlink101 Network Card AWLC3026T User Manual
AKG Acoustics Headphones K 701 User Manual
AMX Stereo Amplifier AVB DA RGBHV ST 0102 User Manual
Axion Lawn Mower CZT2142 User Manual