Emerson ControlWave EFM Instruction Manual page 58

ControlWave EFM Instruction Manual
Figure 2-27. PC Connected to ControlWave EFM via Circular Local Port (use Cable P/N 395402-01-
Table 2-11. RS-232 Port (COM1) Connector Pin Assignment (COM1 Connectors – Circular Local
RS-232 Cable
Guidelines
2-38
8 [10 foot cable] or P/N 395402-02-6 [25 foot cable])
COM1 Pin
1
2
3
4
5
6
7*
8*
* RTS connected to CTS
Observe the following guidelines when constructing RS-232
communication cables:
 Ensure that DCD is high to transmit (except when dialing a modem)
Port & D-Type "C1" Connector on CPU)
RS-232
Signal RS-232 Description
DCD Data Carrier Detect
Input
RXD Receive Data Input
TXD Transmit Data Output
DTR Data Terminal Ready
Output
GND Signal/Power Ground
DSR Data Set Ready Input
RTS Request to Send
Output
CTS Clear to Send Input
Installation
Wire Local Port
Color RS-232
Pin
Green 1
White 7
Red 2
Brown 4
Black 6
Revised Dec-2013