HEIDENHAIN PROFINET - Manual (Page 16)

Installation
16
2.2 Connectors and pin configuration
M12 connectors are used for connecting the bus lines to the en-
coder. The M12 connector used is a 4-pin female shielded
D-coded version.
The correct arrangement of the bus connectors are specified as
follows:
Signal Function Pin
Tx+ Transmission data + 1
Tx- Transmission data - 3
Rx+ Receiver data + 2
Rx- Receiver data - 4
Table 1 Bus Connection
Figure 1
Bus connectors
Note: The encoder provides integrated switch functionality
between the two M12 connectors used for PROFINET
communication. It is important to distinguish between
these ports when IRT-communication is used.
The M12 connector used for power supply of the encoder is con-
stituted by a 4-pin male shielded A-coded version.
The correct arrangement of the power supply line is specified as
follows:
Signal Function Pin
+E Volt Power supply 1
Not connected - 2
0 Volt 0 Volt 3
Not connected - 4
Table 2 Power supply connection
Figure 2
Power supply connector
Note: Passive T-couplings are not possible to use in a
PROFINET network. All devices must be connected
through active network components.
Port 2
Port 1
Supply