KE300A Inverter MODBUS Communication Protocol
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host computer. If the response delay is less than system processing time, then the response delay is
based on the system processing time. If the response delay is more than system processing time, after the
system processing the data, it should be delayed to wait until the response delay time arrives, then sending
data to host computer.
Pd-04
Communication Timeout
Factory Setting
0.0s
Setting range
0.0s (invalid)
0.1~60.0s
When the function code set to be 0.0 s, the communication timeout parameter is invalid.
When the function code set to be valid value, if the interval time between the communication and the next
communication is beyond the communication timeout, the system will report communication failure error
(Err16). At normal circumstances, it is set to be invalid. If in the continuous communication system, set the
parameter, you can monitor the communication status.
Pd-05
Communication Protocol Selection
Factory Setting
1
Setting range
0
：
Nonstandard Modbus protocol
1
：
Standard Modbus protocol
PD-05=1: Select standard MODBUS protocol
PD-05=0: When reading the command, the slave return is one byte than the standard MODBUS protocol’s,
for details refer to communications Data Structure of this protocol.
Pd-06
Communication Selection
Factory Setting
0
Setting range
Units place: Current resolution
0: 0.01A
1: 0.1A
Tens place Writing selection
0: Reply
1: No reply
The units place is used to confirm the output current unit when the communication reads the output
current.
The tens place is used in the applications where setting MODBUS is not required to write a reply.
