User Manual
TMCM-3351 Hardware Manual • Hardware Version V1.00 | Document Revision V0.91 • 2017-JUL-11
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Pin Label Description
1, 4, 6, 7, 8, 9 n.c. Pins not connected
Table 10: RS232 connector
For communication via RS232 transmit serial data of the TMCM-3351 has to be connected to RS232 receive
serial data of the host / master and RS232 receive data of the TMCM-3351 to transmit data of the host /
master - requiring a cross-connection / -cable.
In contrast to the TMCM-351 the TMCM-3351 does not require any jumper setting / selection in order to
enable RS232 connection. RS232 communication is available after power-up (power supply input) without
any further configuration.
4.7 CAN Connector
The board includes one CAN bus interface for serial connection. A standard DSUB 9pin male connector
is integrated on-board for CAN bus connection. CAN is one out of four different interfaces available for
communication with the TMCM-3351.
With CANopen firmware communication using the CANopen protocol is available via this connector.
Pin Label Description
2 CAN_L CAN differential bus
7 CAN_H CAN differnetial bus
3, 6 GND System / module ground
1, 4, 5, 8, 9 n.c. Pins not connected
Table 11: CAN connector
The TMCM-3351 offers on-board line-termination for the CAN bus (120R). For proper operation the CAN
bus should be terminated at both ends of the bus. For any intermediate nodes / bus connections please
remove line termination jumper (see 5, also).
4.8 RS485 Connector
The board includes one RS485 bus interface for serial connection. A 4pin detachable screw connector is
integrated on-board for RS485 bus connection. RS485 is one out of four different interfaces available for
communication with the TMCM-3351.
Pin Label Description
1 RS485+ RS485 differential bus (connected to pin 3)
2 RS485- RS485 differential bus (connected to pin 4)
3 RS485+ RS485 differential bus (connected to pin 1)
4 RS485- RS485 differential bus (connected to pin 2)
Table 12: RS485 connector
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