Instruction manual

ControlWave ExpressPAC Instruction Manual (CI-ControlWave EPAC)

2-22 Installation Revised Mar-2011

Note: A factory-installed wiring harness connects J4 (COM1) to the

circular 5-pin Local Port connector at the bottom of the enclosure

cover.

Table 2-7. RS-232 COM1 (J4) and COM2 (TB3) Port Connector Pin Assignment

RS-232

Signal

RS-232 Description

Local Port (RS-232 Pin#)

1 DCD Data Carrier Detect Input 1 (green wire)

2 RXD Receive Data Input 2 (red wire)

3 TXD Transmit Data Output 7 (white wire)

4 DTR Data Terminal Ready Output 4 (brown wire – Pin 4 connected to pin 4 at TB5

of CPU = external power for local port

communication cable)

5 GND Power Ground 6 (black wire)

6 DSR Data Set Ready Input

7 RTS Request to Send Output RTS connected to CTS at J4 of CPU for local

port communication cable

8 CTS Clear to Send Input RTS connected to CTS at J4 of CPU for local

port communication cable

9 N/A

Table 2-8. RS-232 COM1 (J11) Alternate Connector Pin Assignment

RS-232

Signal

RS-232 Description

1 GND Power ground

2 RXD Receive data input

3 TXD Transmit data output

Use the “null modem” cable for full-duplex (PPP protocol)

communications when connecting a ControlWave ExpressPAC to a PC.

(See top part of Figure 2-11.)