Appendix MD320/MD320N User Manual
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Slave addr.
Communication addr. : 1 to 247
Command Code
03:Read slave parameters 06: Write slave parameters
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F.4 Protocol description
C320 series inverter communication protocol is a kind of serial master-slave communication
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response to master machine.
F.5 Communication data structure
ModBus protocol communication data format of MD320 series of inverter is shown as following:
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implemented as a multiple of character times at the baud rate that is being used on the network
(shown as T1-T2-T3-T4 in the figure below). The first field then transmitted is the device
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character times marks the end of the message. A new message can begin after this interval
The entire message frame must be transmitted as a continuous stream. If a silent interval of
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new message.
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typical message frame is shown below.
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Summary of Contents for MD320 Series
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