ADA-M140 SHORT-HAUL MODEM is use for conversion of
RS485/RS422 to M-1 standard, without interfering with format
of transmitted data. The converter transmits data with baud rate up to 115,2 kbps via two-pairs of twisted-pair, connected to terminals:
Tx+, Tx-, Rx+, Rx- of M-1 interface and two or one twisted-pair, connected to terminals: Tx+/A, Tx-/B, Rx+, Rx- of RS485/RS422
interface`s converter.
ADA-M140 converters are used for separation and
extension of RS485/422 bus, for next segments of length
up to 12km (baud rate
9600bps).
The distances will be reduced in case of transmitting data with large baud rate (over 9600bps). The converter can be use for
communication with other, remote from each other devices equipped with RS485 / RS422 interface eg. controllers.
To RS485/RS422 bus, created on the base
ADA-M140, can be connected up to 32 devices, operates in half duplex or full duplex
modes. To M-1 bus, created on the base
ADA-M140, can be connected 2 devices, operates in half duplex or full duplex modes.
Galvanic isolation 1kVDC and optoisolaction ~3kVDC in signal channel, separate RS485/RS422 interface from M-1 interface of
converter. Protect devices connected to RS485/RS422 port from overvoltage generated on the bus connected to M-1 interface and in
power circuit. Overvoltage protection was made on base safety diodes and fuses on each M-1 and RS485/422 lines.
ADA-M140 should be powered from stabilised power pack with minimum power output 3W and voltage from the scope 10 – 30VDC.
+48 41 362-12-46 ext.201
sales@cel-mar.pl 
