1.7.4.2.1 Intended Purpose
Modbus TCP bus module CI522-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. The bus module contains 24 I/O channels with the following properties:
● 8 digital configurable inputs/outputs in 1 group (1.0...1.7)
● 8 digital inputs 24 VDC in 1 group (2.0...2.7)
● 8 digital outputs 24 VDC in 1 group (3.0...3.7)
The inputs/outputs are electrically isolated from the Ethernet network. There is no potential sep-
aration between the channels. The configuration of the configurable digital inputs/outputs is per-
formed by software.
For usage in extreme ambient conditions (e.g. wider temperature and humidity range), a special
XC version of the device is available.
1.7.4.2.2 Functionality
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 expansion bus interface (I/O bus)
Rotary switches for setting the last BYTE of the IP ADDRESS
(00h to FFh)
Configurable digital inputs/outputs 8 (configurable via software)
Digital inputs 8 (24 VDC; delay time configurable via soft-
ware)
Digital outputs 8 (24 VDC, 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 VDC)
Required terminal unit
TU507 or TU508
Ä
Chapter 1.4.1 “TU507-
ETH and TU508-ETH for Ethernet Communi-
cation Interface Modules” on page 145
1.7.4.2.3 Electrical Connection
The Ethernet bus module CI522-MODTCP is plugged on the I/O terminal unit TU507-ETH
Ä
Chapter 1.4.1 “TU507-ETH and TU508-ETH for Ethernet Communication Interface Modules”
on page 145 or TU508-ETH
Ä
Chapter 1.4.1 “TU507-ETH and TU508-ETH for Ethernet Com-
munication Interface Modules” on page 145. Properly seat the module and press until it locks in
place. The terminal unit is mounted on a DIN rail or with 2 screws plus the additional accessory
for wall mounting (TA526
Ä
Chapter 1.8.2.4 “TA526 - Wall Mounting Accessory” on page 1152).
The electrical connection of the I/O channels is carried out using the 30 terminals of the I/O ter-
minal unit. I/O modules can be replaced without re-wiring the terminal units.
For a detailed description of the mounting, disassembly and electrical connec-
tion of the module, please refer to the System Assembly, Construction and Con-
nection chapter
Ä
Chapter 2.6 “AC500 (Standard)” on page 1248.
Communication Interface Modules (S500) > Modbus
2019/04/173ADR010121, 13, en_US918
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