TM_s-MEXT_ME28relC_00_12_19_EN
Technical manual
TRANSLATION OF THE ORIGINAL INSTRUCTIONS
105
19
ADDRESSING THE MODBUS COMMUNICATION MODULES
Each device connected to the controller via the Modbus protocol must have a univocal Modbus address.
The addresses that must have the devices connected to the Modbus network are listed below, together with the methods for changing address with respect the one initially
set by the supplier.
19.1
FIELDBUS 1
The following devices are connected to the FieldBus 1 port through Serial Card code: C5111046 (RS485 BOARD FIELD BUS x PCO1-PCO100FD10).
Module
Modbus address
Method for changing address
T+H probe
128
Dip switch (see next chapter)
Additional Room T+H probe 129
Dip switch (see next chapter)
CPY
148
Default
Network transducer
Gavazzi
1
The address remains fixed at 1
In the
“Config.” menu
, which can be accessed by entering the
“Factory” password
communication is enabled
with the transducer.
19.1.1
Configuration of T+H probe module communication
The T+H probe communication parameters are configured using the Dip-Switches on the probe electric boards.
Figure 19-1:
T+H probe module layout
Configuration of the room T+H probe (address 128)
Dip-switches
Description
Position
Value
1÷5
Device address
OFF
128
6
Protocol
OFF
Modbus 8-None-2
7
ON
8
Baud Rate
OFF
19200
Configuration of the remote T+H probe (address 129)
Dip-switches
Description
Position
Value
1
Device address
ON
129
2÷5
OFF
6
Protocol
OFF
Modbus 8-None-2
7
ON
8
Baud Rate
OFF
19200
