Communication Guide, ©ComAp – March 2014 87
IGS-NT Communication Guide 03-2014.pdf
3G Modems
The functionality of 3G modems with Comap controllers depends on the operator and his network
settings. Therefore it is recommended to first test the controller with such modem.
Recommended Satellite Modems
Thrane & Thrane EXPLORER series http://www.thrane.com/
Wideye SABRE series http://www.wideye.com.sg/
Converters
Converter RS232 RS485
General properties of RS232 to RS485 converters:
Has to be set to passive DSR signal (when DSR connected) after switch on.
No external data flow control signals are allowed – automatic data flow control required.
Recommended converters
External:
ADAM 4520,
ADVANTECH, (http://www.advantech.com/)
- DIN rail, automatic RS485 bus supervision, no external data flow
control signals, galvanic isolated, baud rate 19200 bps
- When communication is working the LED on ADAM 4520 is
going from full illumination to short darkness then again full
illuminated
- When communication of I-LB is working, PWR and RUN LEDs
full red illuminated; TxD and RxD flashing when transmitting
Internal for PC:
PCL-745B or PCL745S,
ADVANTECH, (http://www.advantech.com/)
(Dual port RS422/485 Interface card, automatic RS485 bus
supervision, no external data flow control signals, galvanic isolated,
baud rate 19200 bps)
Jumper for
RS485
connected
SW1: 1 closed
(10bit)
SW2: 6 closed