Depending on the processor module variants, an additional option board can be connected to
the option board slot to extend the feature of the processor module .
RS-232 communication interface is available by using option board:
● TA5141-RS232I (isolated)
Ä
Chapter 1.3.1.2.6 “TA5141-RS232I - Option board for COMx serial communication”
on page 75
RS-485 communication interface is available by using option boards:
● TA5142-RS485I (isolated)
Ä
Chapter 1.3.1.2.7 “TA5142-RS485I - Option board for COMx serial communication”
on page 78
● TA5142-RS485 (non isolated)
Ä
Chapter 1.3.1.2.8 “TA5142-RS485 - Option board for COMx serial communication”
on page 84
The Ethernet interface is carried out via a RJ45 jack.
Table 6: Pin assignment of the Ethernet interface
Interface Pin Description
1 Tx+ Transmit data +
2 Tx- Transmit data -
3 Rx+ Receive data +
4 NC Not connected
5 NC Not connected
6 Rx- Receive data -
7 NC Not connected
8 NC Not connected
Shield Cable shield Functional earth
1.3.1.1.4 Power supply
The processor modules PM50x2 can be connected to the 24 V DC supply voltage via a remov-
able 3-pin spring terminal block or a 3-pin screw terminal block.
Table 7: Removable terminal block for the supply voltage 24 V DC
3-pin spring terminal block 3-pin screw terminal block
The terminal block is available as a set for AC500-eCo V3 processor modules.
Option board
slot interface
Serial interface
Ethernet inter-
face
Processor modules > AC500-eCo
2022/01/31 3ADR010278, 3, en_US 19
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