Overview

The RCOM/RCOM+ Communication Module CM574-RCOM requires a CPU with firmware version V1.3.0 or above.

The CM574-RCOM Communication Module is available in two versions:

• Freely programmable Communication Module for programming using CODESYS
• Communication Module with fixed protocol, e.g. RCOM/RCOM+

Note

This documentation describes the Communication Module version with RCOM/RCOM+ protocol.

The capabilities of the CM574-RCOM Communication Module correspond to a Processor Module PM571. Further information on the Processor Module can be found in the corresponding device description PM57X_PM58X_PM59X: PM57x (-y), PM58x (-y) and PM59x (-y) PM57x (-y), PM58x (-y) and PM59x (-y).

CM574-RCOM can be plugged into any slot for Communication Modules on a Terminal Base TB511, TB521 or TB541TB51X_TB54X: TB51x-TB54x TB51x-TB54x. Up to 4 CM574-RCOM can be used in one AC500 system.

The Communication Module provides 2 serial interfaces which are designed according to the standards EIA RS-232 and EIA RS-485. The pin assignment of the interfaces corresponds to the pin assignment of COM1 at Processor Module PM57x, PM58x and PM59x.