ModBUS CONNECTION RULES
1) Install the modules in the DIN rail (120 max)
2) Connect the remote modules using cables of an appropriate length. The following table shows cable length data:
- Bus length: maximum length of the Modbus network according to the Baud Rate. This is the length of the cables
that connect the two farthest modules (see Diagram 1).
- Derivation length: maximum length of a derivation 2 m (see Diagram 1).
For maximum performance, it is recommended to use special shielded cables, such as BELDEN 9841.
INSTALLATION REGULATIONS
The module has been designed for vertical installation on a DIN 46277 rail. For optimal operation and long life,
adequate ventilation must be provided. Avoid positioning ducting or other objects that obstruct the ventilation slots.
Avoid mounting modules over equipment generating heat. Installation in the bottom part of the switchboard is rec-
ommended.
Insertion in the DIN rail
As shown in figure:
1. Insert the IDC10 rear connector of the module on a
free slot of the DIN rail
(the insertion is univocal since the connectors are
polarized).
2. To secure the module to the DIN rail, tighten the two
hooks on the side of the IDC10 rear connector.
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CONFIGURATION OF FACTORY SETTINGS
All DIP-switches in
OFF position
Communication parameters of ModBUS protocol:
38400 8, N, 1 Address 1
Communication parameters of micro USB front port:
2400 8, N, 1 Address 1
Input type of the 4 inputs:
Voltage in mV
Scale range of the 4 inputs:
± 160 mV
Sampling time:
120 ms
1200 m
2 m
2
1
4
5
Ld
Diagram 1
Bus length
Derivation
length
Module
Module
Module
Module
Module 3
Bus length
Ld= derivation length
Insertion on
the DIN rail
MODULE
DIN rail
