3
Mounting and installation
Festo – P.BE-CPX-FB37-EN – 1406NH – English
23
3.3.2
Network interface
To connect to the network, there are two 4-pin M12 sockets with D-coding on the bus node (for industri-
al Ethernet use, corresponding to IEC 61076-2-101). The sockets are compatible with SPEEDCON
®
plugs.
M12 socket,
D-coded
Pin
Signal
Explanation
1
TD+
Transmission data (transmit data, TD) +
2
RD+
Receive data (receive data, RD) +
3
TD-
Transmitted data –
4
RD-
Received data –
Housing
FE
Screening/functional earth (FE)
Tab. 3.7
Pin allocation of the network interfaces
3.3.3
Network connectors
Note
To comply with degree of protection IP65/IP67:
•
Use Festo plugs.
•
Seal unused interfaces (
Section 3.4).
Accessories for the bus node can be found on the Festo website
(
www.festo.com/catalogue).
3.3.4
Cable specification
Use shielded Industrial Ethernet cables of category Cat 5 or higher. You can find details regarding cable
specification in Tab. 3.8.
The CPX bus node FB37 supports crossover detection:
To connect your bus node to the network, the control system or a PC, you can either use
patch cables or crossover cables (Auto-MDIX).
Note
If the CPX terminal is fitted onto the moving part of a machine, the network cable on the
moving part must be provided with strain relief. Also observe the corresponding regula-
tions in IEC/EN 60204 Part 1.
