ABB AC 800M Manual

Section 3 Configuration Communication Possibilities
3BSE036351-510 A 155
• COM3 is an RJ45 port for RS-232C with modem signals. Examples of
protocols are Modbus, Siemens 3964R, COMLI or custom-design. For more
details, see protocol-specific documentation.
• COM4 is an RJ45 port for connection of service tools (see Connecting Control
Builder on page 152). The port has no modem signals.
By adding communication interfaces to the CEX-Bus, the number of protocols and
processor unit ports can be expanded. The available CEX-Bus interface quantities
are shown in Table 19 on page 156.
COM3 port is not available for PM891.

ABB AC 800M Specifications

General

Brand	ABB
Model	AC 800M
Category	Controller
Language	English