The Modbus TCP communication interface module CI52x-MODTCP is used as decentralized I/O module in Modbus TCP networks. The network connection is performed via 2 RJ45 connectors which are integrated in the terminal unit.
Application examples
In projects in which several Modbus connections are needed at the same time, the number of Modbus sockets can be increased. How to increase the socket number with an additional run time license is described in an ⮫ application note.
A CI52x cluster can be used for the communication between the CPU and CI52x-MODTCP modules. An example on how to create a CI52x cluster configuration using the bulk data manager tool, is described in the application example ⮫ CI52x-MODTCP cluster.
A summary of the function codes that are supported for Modbus TCP communication with a PLC is given in the application example ⮫ Modbus TCP and ModTcpMast2.
A description on how to establish a Modbus TCP communication with fixed and dynamic register mapping in an AC500 PLC is given in the application example ⮫ Modbus TCP and register mapping.
To operate fast counter on CI52x devices in combination with a PLC correctly via Modbus TCP, a corresponding sample project is available. Setup and use are described in an ⮫ application example.
CI521-MODTCP
I/O channels properties:
-
4 analog inputs (1.0...1.3)
-
2 analog outputs (1.5...1.6)
-
8 digital inputs 24 V DC in 1 group (2.0...2.7)
-
8 digital outputs 24 V DC in 1 group (3.0...3.7)
Functionality
|
Parameter |
Value |
|---|---|
|
Interface |
Ethernet |
|
Protocol |
Modbus TCP |
|
Power supply |
from the process supply voltage UP |
|
Supply of the electronic circuitry of the I/O expansion modules attached |
Through the I/O bus interface (I/O bus) |
|
Rotary switches |
For setting the last BYTE of the IP (00h to FFh) |
|
Analog inputs |
4 (configurable via software) |
|
Analog outputs |
2 (configurable via software) |
|
Digital inputs |
8 (24 V DC; delay time configurable via software) |
|
Digital outputs |
8 (24 V DC, 0.5 A max.) |
|
LED displays |
For system displays, signal states, errors and power supply |
|
External supply voltage |
Via terminals ZP, UP and UP3 (process supply voltage 24 V DC) |
CI522-MODTCP
I/O channels properties:
-
8 digital configurable inputs/outputs in 1 group (1.0...1.7)
-
8 digital inputs 24 V DC in 1 group (2.0...2.7)
-
8 digital outputs 24 V DC in 1 group (3.0...3.7)
Functionality
|
Parameter |
Value |
|---|---|
|
Interface |
Ethernet |
|
Protocol |
Modbus TCP |
|
Power supply |
from the process supply voltage UP |
|
Supply of the electronic circuitry of the I/O expansion modules attached |
Through the I/O bus interface (I/O bus) |
|
Rotary switches |
For setting the last BYTE of the IP (00h to FFh) |
|
Configurable digital inputs/outputs |
8 (configurable via software) |
|
Digital inputs |
8 (24 V DC; delay time configurable via software) |
|
Digital outputs |
8 (24 V DC, 0.5 A max.) |
|
LED displays |
For system displays, signal states, errors and power supply |
|
External supply voltage |
Via terminals ZP, UP and UP3 (process supply voltage 24 V DC) |
The inputs/outputs are galvanically isolated from the Ethernet network. There is no potential separation between the channels.
The configuration of the inputs/outputs is performed by software.
For usage in enhanced ambient conditions (e.g. wider temperature and humidity range), a special XC version of the device is available.