7.9.- MODBUS/TCP Switch COMMUNICATIONS MODULE
The M-CVM-AB-Modbus TCP (Switch) is a communications module for connecting the CVM-A
devices to a Modbus/TCP network and as an Ethernet to Ethernet gateway.
Modbus/TCP is a communications protocol designed for enabling industrial devices to
communicate with each other on Ethernet networks using TCP/IP protocols.
Basically, Modbus/TCP encapsulates a Modbus frame within a TCP frame, making it possible
to congure and monitor a device via the Internet.
7�9�1�- CONNECTION TERMINALS
Table 173:List of terminals, Modbus TCP (Switch) communications module�
Terminals in the device
1: Ethernet
2: Ethernet
1
2
Figure 394: Modbus TCP (Switch) communications module terminals
7�9�2�- LEDs
Table 174: List of LEDs, Modbus TCP (Switch) communications module�
LED Status Function
LINK / ACT
On Device connected to the network
Off Device disconnected from the network
Blinking light Activity on the bus
SPEED
On 100 BT
Off 10 BT
SPEED
LINK/ACT
Figure 395: LEDs Modbus TCP� (Switch)
340
CVM-A1000 - CVM-A1500
Instruction Manual
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