ABB AX521 User Manual

31.5.3 Serial Interface COM1
Pin Signal Interface Description
Terminal
block
removed
Terminal
block
inserted
1 Terminator P RS-485 Terminator P
2 RxD/TxD-P RS-485 Receive/Transmit,
positive
3 RxD/TxD-N RS-485 Receive/Transmit,
negative
4 Terminator N RS-485 Terminator N
5 RTS RS-232 Request to send
(output)
6 TxD RS-232 Transmit data
(output)
7 SGND Signal Ground Signal Ground
8 RxD RS-232 Receive data
(input)
9 CTS RS-232 Clear to send
(input)
NOTICE!
Unused connector!
Make sure that the terminal block is always connected to the terminal base,
even if you do not use the interface.
31.5.4 Ethernet Network Interface
Pin Signal Description
1 TxD+ Transmit Data +
2 TxD- Transmit Data -
3 RxD+ Receive Data +
4 NU Not used
5 NU Not used
6 RxD- Receive Data -
7 NU Not used
8 NU Not used
Shield Cable shield 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.
Pin Assignment
Pin Assignment
TB56xx-2ETH
Connection > Ethernet Network Interface
2019/11/15 3ADR024117M02xx, 11, en_US 239

ABB AX521 Specifications

General

Brand	ABB
Model	AX521
Category	I/O Systems
Language	English