Modbus Connection Rules - Seneca Z-LINK2-LO Installation Manual

SETTING THE DIP-SWITCHES
1 2 3 4 5 6

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).
Bus length
1200 m
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 heat-generating equipment.
Installation in the bottom part of the electrical panel is recommended.
These are open type devices intended for installation in a final casing/panel that offers mechanical protection and protection
against the spread of fire.
To configure the device via the Easy Setup software, the master device must be switched off.
MI00602-1-EN
The device is connected to ModBUS slave modules
The device is connected to the ModBUS Master or is operating as ModBUS Master
38400 baud - 8N1
19200 baud - 8N1
9600 baud - 8N1
Communication parameters from EEPRON (default: 38400 baud - 8N1)
N.B.: any change must be performed only using the Easy Setup 2 software
The radio module is internally connected to IDC10 (Seneca RS485 bus) and to terminals 7-8-9
Programming mode with Easy Setup
ModBUS RS485 enabled
ModBUS RS485 disabled
Diagram 1
Derivation
length
2 m
INSTALLATION MANUAL
SW1
Module 3
Module 1 Module 2
Bus length
Ld = Derivation length
CAUTION
CAUTION
Module 4
Ld
Module 5
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