Festo EMCA-EC-67 CO Series, Описание

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2 CANopen
Festo – EMCA-EC-C-HP-EN – 2017-11e – English 23
2.2.2 CAN bus ports
The EMCA is integrated into a CAN bus network through the following connections.
Connection [X2]: CAN bus input (CAN IN)
M12 plug connector
A-coded
5-pin
Pin Designation Description
1 CAN_SHLD Screening, capacitive connection to housing
2 NC Unused
3 CAN_GND Load (reference potential for CAN signals)
4 CAN_H Positive CAN signal (dominant high)
5 CAN_L Negative CAN signal (dominant low)
Housing Shield/FE Shield/functional earth
Tab. 2.3 Connection [X2]: CAN bus input (CAN IN)
Connection [X3]: CAN bus output (CAN OUT)
Socket M12
A-coded
5-pin
Pin Designation Description
1 CAN_SHLD Screening, capacitive connection to housing
2 NC Unused
3 CAN_GND Load (reference potential for CAN signals)
4 CAN_H Positive CAN signal (dominant high)
5 CAN_L Negative CAN signal (dominant low)
Housing Shield/FE Shield/functional earth
Tab. 2.4 Connection [X3]: CAN bus output (CAN OUT)
CAN bus cabling
To ensure a stable and trouble-free CAN bus communication, observe the following in­
formation and notes:
– CAN bus cabling
è
page 25
– Bit rate and bus length
è
page 27
Incorrect wiring of the CAN bus can cause malfunctions in the CAN bus communication
during operation.
This can have the following results:
– The EMCA switches off due to a function error.
– The entire CAN bus communication breaks down and the system's subfunction no
longer works.