ABB Totalflow NGC8206 Startup Manual page 16

Comm 2 defaults to NGC Interface, communicates via Modbus and
functions as a Modbus Slave.
Both communication ports (Comm 1 and Comm 2) can function as RS-
232, RS-422 or RS-485. The following table details the connections for
remote communications.
Comm 1 and Comm 2 Pin-Outs/Terminations
RS232
PIN COMM 1 (J8)
1 Power Out
2 Ground
3 Switched Power Out
4 Operate
5 Not Used
6 Request To Send
7 Transmit Data
8 Receive Data
9 Clear To Send (CTS)
COMM 2 (J10)
1 Power Out
2 Ground
3 Switched Power Out
4 Operate
5 Not Used
6 Request To Send
7 Transmit Data
8 Receive Data
9 Clear To Send (CTS)
TERMINATIONS
First or Intermediate Unit (RS-485)
Last or Only Unit (RS-485)
RS232
All communication parameters are found in the Setup tabs for each
instantiated Communication application in PCCU32. Systems are
shipped with default settings for communications but may need further
modification. For additional information, please refer to the NGC8206
User's Manual.
14
RS485
COMM 1 (J8)
Power Out
Ground
Switched Power Out
Operate
RRTS
Bus +
Bus -
No Connection
No Connection
COMM 2 (J10)
Power Out
Ground
Switched Power Out
Operate
RRTS
Bus +
Bus -
No Connection
No Connection
Comm 1 (J9)
Pins 2–3
Pins 1–2
Pins 2–3
RS422
COMM 1 (J8)
Power Out
Ground
Switched Power Out
Operate
RTS
Transmit Bus +
Transmit Bus -
Receive Bus +
Receive Bus -
COMM 2 (J10)
Power Out
Ground
Switched Power Out
Operate
RTS
Transmit Bus +
Transmit Bus -
Receive Bus +
Receive Bus -
Comm 2 (J11)
Pins 2–3
Pins 1–2
Pins 2–3