84 SIMPHOENIX Self-Defined Communication Protocol
(5) Slave machine response
The response of slave machine to data sent by main machine is mainly used to
feedback implementation of slave machine to command frame of main machine,
which exists in all types of data frame. The slave machine response is defined as
below:
Data
Meaning
0
Slave machine receives data,
normal operation
Data
Meaning
1
The received data range is over
ranging
2
Slave machine running forbids
modifying data
3
Data modification is forbidden
by password
4
Try to read-write
reserve/hidden parameters
The specified parameter code
6
or address are illegal (over
ranging)
5
Reserve
When transmitting data in ASC
7
II code, illegal ASC II character
exists.
8
Illegal command classification
or operation command
9~F
Reserve
When the data of response byte of slave machine is "6-8", the
response frame size is 11 bytes.
The frame format is shown as below:
0
1
2
3
4
5
6
7
8
9 10
0
0
Station
address
Command / Response
area
Check area
0DH
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