MD500 User Manual 8. Interfaces and Communication
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8.2 Serial Communication
You must install the relevant extension card in the MD380 and set the correct value for function code F0-28 before you can use one
of the available serial communication protocols. The available serial communication protocols are:
ƕ RS485
ƕ PROFIBUS-DP
ƕ CANopen
ƕ CANlink
Note that function code F0-28 has the correct value for the CANlink communication protocol by default.
See the information about group Fd for instructions to set the hardware communication parameters for the relevant communication
protocol. You must set the identical communication rate and data format for
the MD500 and for the host computer, otherwise the serial communications will not work.
The MD500 serial port supports the Modbus-RTU slave communication protocol. This port supports the following functions:
ƕ Query and modify the MD500 function codes.
ƕ Query various running state parameters.
ƕ Send the Run command and the run frequency to the AC Drive from the host computer.
The MD500 arranges the function codes, the running state parameters and the run commands by using the register parameter
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