
14
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
RS485
RS422
PIN
COMM 1 (J8)
COMM 1 (J8)
COMM 1 (J8)
1
Power Out
Power Out
Power Out
2 Ground
Ground
Ground
3
Switched Power Out
Switched Power Out
Switched Power Out
4 Operate
Operate
Operate
5 Not
Used
RRTS
RTS
6
Request To Send
Bus +
Transmit Bus +
7
Transmit Data
Bus -
Transmit Bus -
8
Receive Data
No Connection
Receive Bus +
9
Clear To Send (CTS)
No Connection
Receive Bus -
COMM 2 (J10)
COMM 2 (J10)
COMM 2 (J10)
1
Power Out
Power Out
Power Out
2 Ground
Ground
Ground
3
Switched Power Out
Switched Power Out
Switched Power Out
4 Operate
Operate
Operate
5 Not
Used
RRTS
RTS
6
Request To Send
Bus +
Transmit Bus +
7
Transmit Data
Bus -
Transmit Bus -
8
Receive Data
No Connection
Receive Bus +
9
Clear To Send (CTS)
No Connection
Receive Bus -
TERMINATIONS
Comm 1 (J9)
Comm 2 (J11)
First or Intermediate Unit (RS-485)
Pins 2–3
Pins 2–3
Last or Only Unit (RS-485)
Pins 1–2
Pins 1–2
RS232
Pins 2–3
Pins 2–3
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.
Start-up