ABB AC500 V3 Hardware Manual page 731

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1.7.4.1.1
Intended purpose
The Modbus TCP communication interface module CI521-MODTCP is used as decentralized
I/O module in Modbus TCP networks. The network connection is performed via 2 RJ45 connec-
tors which are integrated in the terminal unit. The communication interface module contains 22
I/O channels with the following 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)
The inputs/outputs are galvanically isolated from the Ethernet network. There is no potential
separation between the channels. The configuration of the analog 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.
1.7.4.1.2
Functionality
Parameter
Interface
Protocol
Power supply
Supply of the electronic circuitry of the I/O
expansion modules attached
Rotary switches
Analog inputs
Analog outputs
Digital inputs
Digital outputs
LED displays
External supply voltage
Required terminal unit
1.7.4.1.3
Connections
The Ethernet communication interface module CI521-MODTCP is plugged on the I/O terminal
unit TU507-ETH or TU508-ETH
communication interface modules" on page 122. 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
on page 902).
The connection of the I/O channels is carried out using the 30 terminals of the I/O terminal unit.
I/O modules can be replaced without re-wiring the terminal units.
2022/01/31
Value
Ethernet
Modbus TCP
From the process supply voltage UP
Through the I/O bus interface (I/O bus)
for setting the last BYTE of the IP (00h to FFh)
4 (configurable via software)
2 (configurable via software)
8 (24 V DC; delay time configurable via soft-
ware)
8 (24 V DC, 0.5 A max.)
For system displays, signal states, errors and
power supply
Via terminals ZP, UP and UP3 (process supply
voltage 24 V DC)
TU507 or TU508
and TU508-ETH for Ethernet communication
interface modules" on page 122
Ä Chapter 1.5.1 "TU507-ETH and TU508-ETH for Ethernet
Ä Chapter 1.8.2.6 "TA526 - Wall mounting accessory"
3ADR010278, 3, en_US
Communication interface modules (S500) > Modbus
Ä Chapter 1.5.1 "TU507-ETH
Device specifications
731

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