Bitzer CM-RC01 Instructions D'installation page 44

Step 8
Fig. 24: Close the gateway housing.
9 Connection of the gateway in a bridge configuration
Since the IQ MODULES CM-RC-01, CM-RC-02 and CM-SW-01 modules have only one Modbus communication
port, a PLC (programmable logic controller) bridge configuration can be used for the simultaneous connection of
the devices to the gateway (additional 9-Pole D-SUB cable coupling is required).
System
controller
BITZER
gateway
Modbus
Modbus
device #2
device #1
*: not needed for gateway box
(part no. 347 990 01)
Fig. 25: Bridge configuration: general setup
CT-311-5 // PDF Download 44