
Using the Modbus Ports
870USE10110 July 2004 105
Modbus Port 1 (On Selected M1 Processor Adapters)
Introduction Modbus port 1 is an RS232 asynchronous serial port that permits a host computer
to communicate to the CPU for:
programming
data transfer
upload/download
other host operations
This section describes the port.
Connector Type The Modbus port 1 connector is a female RJ45 phone jack.
Illustration The following illustration shows the position of Modbus port 1 on a processor
adapter.
Legend:
Label Description
1 Modbus port 1
RUN
COM
ACT
171 CCS 760 00
M1 CPU
1
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