Siemens SIMATIC Distributed I/O ET 200eco PN Operating Instructions Manual page 36

Required accessories
• Prefabricated cable with 5-pin M12 cable connector
• or 3-, 4- or 5-wire copper cable, flexible and 5‑pin M12 connector (see tables below)
• or a Y cable
• M12 sealing caps
You can find the article numbers in the appendixArticle numbers (Page 227).
Connecting the M12 connector
1. Plug the connector into the relevant circular socket connector on the I/O block. Make sure
the connectors and sockets are properly interlocked (matched joint).
2. Secure the connector by tightening the knurled ring nut with a torque of 1.5 Nm.
Figure 3-2 Connecting the M12 connector
Y cable
The Y cable allows you to connect two actuators or sensors to the inputs or outputs of the
ET 200eco PN.
The use of the Y cable is particularly recommended when two channels are occupied for each
socket of an I/O device. The Y cable distributes the channels to two circular connectors (see
figure below for pin assignment).
The wiring of the Y cable is shown below.
Figure 3-3 Y cable
ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
Wiring
3.5 Wiring the ET 200eco PN
37