Festo CPX-FB36 - Page 35

1. Installation
1-15
Festo CPX-FB36-EN en 1611a English
1.3.4 Network connections
There are two 4-pin, D-coded M12 sockets on the bus node
for the network connection. The sockets are compatible with
SPEEDCON plugs.
Both connections have “Auto-Negotiation” and “Crossover”
detection (factory setting).
When crossover detection is activated, the bus node automat
ically exchanges the transmitted and received data.
If crossover detection is deactivated, assignment of the pins
for transmitted and received data at the XP2 connection is
crossed. As a result, several bus nodes in a row can each be
connected with a patch cable.
Socket
1)
Pin Connection[X1]
2)
Connection[X2]
2)
M12, 4-pin Signal Explanation Signal Explanation
1
2
3
4
Housing
TD+
RD+
TD–
RD–
Shield
Transmitted data +
Received data +
Transmitted data –
Received data –
Functional earth
RD+
TD+
RD–
TD–
Shield
Received data +
Transmitted data +
Received data –
Transmitted data –
Functional earth
1) Functional earth is accomplished via the housing
2) Pin activation with deactivated crossover detection
Tab. 1/8: Pin allocation of the network connections [X1] and [X2]
If the QuickConnect function has been activated, the crossov
er detection function is not available.
Further notes on wiring with deactivated crossover detection
can be found in chapter 2.1.2.