Rs 232 connections, Table 62 - rs 232 connections – Rockwell Automation 825-P Modular Protection System for Motors User Manual User Manual
Page 133
Rockwell Automation Publication 825-UM004D-EN-P - November 2012
133
Modbus RTU Communications Chapter 10
RS 232 Connections
Table 62 - RS 232 Connections
Figure 46 - Example of wiring between a MicroLogix PLC Advanced Interface Converter (AIC) and
the 825-PMB, Modbus Option Card.
Pin
Pin Function
Definition
1
+5V DC
2
RxD
Receive Data
3
TxD
Transmit Data
4
NC
No Connection
5
GND
Signal Ground
6
GND
Signal Ground
7
NC
No Connection
8
RTS
Request to Send
9
CTS
Clear to Send
5 4 3 2 1
9 8 7 6
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