MTX-IND-V2 Industrial Featured GSM-GPRS terminal modem http://www.matrix.es
MTX-IND-V2 User Manual V.1.1
Page. 23
Subject to change without prior notice
3.7. SECONDARY SERIAL INTERFACE ASC1
The MTX-IND-V2 includes the second serial interface ASC1 which can be configured RS232, RS485 or
RS422 via following block pins, shown below:
The modem supports by default a RS485 serial interface.
Can be changed to RS232 and RS422 interfaces with internal jumpers selectors.
RS485 and RS422 buses can be configured as open bus or ended with 120 ohm resistor
Internal JUMPER CONFIGURATION
Location for JPC2 & JPC4
Block pin
number
Description
Block pin 42
GND RS232 ASC1
Block pin 43
TX/TX+ RS232/RS485/422 ASC1
Block pin 44
RX/RX- RS232/RS485/422 ASC1
Block pin 45
CTS/RX+ RS232/RS485/422 ASC1
Block pin 46
RTS/TX- RS232/RS485/422 ASC1