Emerson Process Management Bristol ControlWave ExpressPAC User Manual
Page 36
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
Pin
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
Pin
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.)