Connecting The Communication Modules - INTEGRA Metering CALEC ST III User Manual

Installation
5.3.12

Connecting the communication modules

M-Bus
Additional M-Bus modules can be inserted in the CALEC® ST III in order to duplicate network or to manage
several data flow for different solutions.
Module #1: A11/B11 (Channel #1)
Disconnect the CALEC® ST III from the power
u
supply.
Take off the front cover [}p. 20].
u
If module #1 is installed: Connect the M-Bus to
u
terminals A11 and B11.
If module #2 is installed: Connect the M-Bus to
u
terminals A21 and B21.
Close the front cover [}p. 20].
u
Apply voltage.
u
For the programming options to this module see M-
Bus [}p. 45].
Modbus RTU
Module #1: A11/B11 (Channel #1)
When installing CALEC® ST III at the end of the Modbus segment the internal termination resistor can be
Disconnect the CALEC® ST III from the power
u
supply.
Take off the front cover [}p. 20].
u
If module #1 is installed: Connect the Modbus to
u
terminals A11 (+) and B11 (-).
If module #2 is installed: Connect the Modbus
u
to terminals A21 (+) and B21 (-).
Close the front cover [}p. 20].
u
Apply voltage.
u
For the programming options to this module see
Modbus [}p. 45].
3-140-UM-EN-02
Analogue outputs are electrically isolated
The use of primary and secondary addresses is possible
Setting the baud rate is possible
Factory settings:
Primary address: 0
Secondary address: serial number
Baud rate: 2'400 Baud
The interface is electrically isolated.
used.
Factory settings:
Modbus address: 1
Parity: Even
Baud rate: 19'200 Baud
Module #2: A21/B21 (Channel #1)
Module #2: A21/B21 (Channel #1)
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