ABB AC 800M Manual

Section 2 Installation Installing PM891 in Single Configuration
3BSE036351-510 A 89
COM4 Port
The COM4 port is an RS-232C port, opto-isolated and without modem signals.
Connect the Control Builder to this port when connecting directly to the controller,
or, when not required, without the need use the remote tool connection through the
Control Network.
Table 9. PM891 COM4 Connections (RJ45 connector)
Pin Designation Direction Description
1 – – Not used
2 – – Not used
3 TD Out Transmit Data
4 0 V – Signal ground
5 0 V – Signal ground
6 RD In Receive Data
7 – – Not used
8 – – Not used
Housing Shield – Shield

ABB AC 800M Specifications

General

Brand	ABB
Model	AC 800M
Category	Controller
Language	English