ABB AC 800M

Installing the PM8xx/TP830 Processor Unit in Single Configuration Section 2 Installation
62 3BSE 027 941 R301
COM3 Port
The COM3 is an RS232-C port with modem signals. This port is used for serial
protocols such as Modbus, Siemens 3964R, COMLI or custom-design.
Table 8. TP830 COM3 Connections (RJ45 connector)
Pin Designation Direction Description
1 RTS Out Request To Send
2 DTR Out Data Terminal Ready
3 TD Out Transmit Data
4 0V - Signal ground
5 0V - Signal ground
6 RD In Receive Data
7 DCD In Data Carrier Detect
8 CTS In Clear To Send
Housing Shield - Shield