The serial interface COM2 is connected to a 9-pin D-sub connector. It is configurable for
RS-232 and RS-485 and can be used (depending on the processor module) for:
● Online access (RS-232 programming interface for Automation Builder)
● A free protocol
● Modbus RTU, client and server
COM2 is not intended to establish a CS31 system bus.
TB5x3-2ETH terminal bases have no COM2 D-sub connector.
Serial
Interface
Pin Signal Interface Description
1 FE - Functional earth
2 TxD RS-232 Transmit data Output
3 RxD/TxD-P RS-485 Receive/Transmit Positive
4 RTS RS-232 Request to send Output
5 SGND Signal ground 0 V supply out
6 +5 V - 5 V supply out
7 RxD RS-232 Receive data Input
8 RxD/TxD-N RS-485 Receive/Transmit Negative
9 CTS RS-232 Clear to send Input
Shield FE - Functional earth
NOTICE!
Risk of corrosion!
Unused connectors and slots may corrode if XC devices are used in salt-mist
environments.
Protect unused connectors and slots with TA535 protective caps for XC devices
TA535
Ä
Chapter 1.8.4.6 “TA535 - Protective Caps for XC Devices”
on page 1172.
1.1.1.2.4 ARCNET Network Interface
ARCNET connection of the processor modules PM5xx-ARC.
1.1.1.2.5 Ethernet Networking Interfaces
This interface is used for the connection of processor modules with onboard Ethernet e.g.
PM5xx-ETH.
Serial Interface
COM2
Pin assignment
Terminal Bases (AC500 Standard) > TB51x-TB54x
2019/04/17 3ADR010121, 13, en_US 9
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