Item Color Status Description
Blinking fast (4 Hz) The NIM01C3 is running properly,
but fails to communicate with the
host.
Communications Ports
Table 3-31 Communications port description
Communications
Port
Communications
Parameter
Description
COM1 port Baud rate: 9600
bits/s, 19200
bits/s, or 115200
bit/s
Supports master/slave protocols and
Modbus.
Supplies 12 V power.
COM2 port Baud rate: 9600
bits/s, 19200
bits/s, or 115200
bit/s
Supports master/slave protocols and
Modbus.
Supplies 12 V power.
COM3/CAN port Baud rate: 9600
bit/s
COM3: Supports master/slave
protocols and Modbus.
CAN: Supports the CAN protocol.
COM4 port Baud rate: 9600
bits/s, 19200
bits/s, or 115200
bit/s
Supports Modbus.
Figure 3-29 Pins in the COM1, COM2, and COM3 ports
Table 3-32 Pin denitions for the COM1 and COM2 ports
Pin
Signal Description
1 RS485+ RS485 data+
2 RS485- RS485 data–
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User Manual 3 Components
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