Processor Unit serial adapter
The Moxa CP114EL-I serial adapter board is used in the MS70 Processor Unit to provide serial communication. The board provides four serial lines. The serial lines are connected using a large D-connector on the rear side of the Processor Unit cabinet.
Image
The Moxa CP114EL-I serial adapter supports RS-232, RS-422 and RS-485 (both 2 and 4-wire).
The connections to the board are made using a converter cable with four 9-pin male D-connectors. The converter cable is supplied with the Processor Unit.
•  Manufacturer: Moxa
•  Manufacturer’s website: http://www.moxa.com
Adapter
Image
A dedicated adapter cable is provided with the MS70 delivery. It splits the large front mounted connector to four 9–pin D-connectors.
To make the individual connections easier, four 9-pin D-sub connectors with screw terminals, and a number of adapter nuts for connection to the adapter cable, are also included in the delivery.
Serial line support
The Moxa CP114EL-I serial adapter supports the following interface formats:
•  Port 1: RS-232 / RS-422 / RS-485
•  Port 2: RS-232 / RS-422 / RS-485
•  Port 3: RS-232 / RS-422 / RS-485
•  Port 4: RS-232 / RS-422 / RS-485
A dedicated software utility in the device driver is used to set up the ports to match your requirements. For this reason, there are neither jumpers nor DIP switches on the circuit board.
Pin assignments
Moxa CP114EL-I 9-pin D-connector converter
Pin RS-232 RS-422 RS485 (4–wire) RS485 (2–wire)
1 DCD TXD-(A) TXD-(A)  
2 RxD TXD+(B) TXD+(B)  
3 TxD RXD+(B) RXD+(B) Data-(B)
4 DTR RXD-(A) RXD-(A) Data-(A)
5 GND GND GND GND
6 DSR      
7 RTS      
8 CTS      
9