ID share mode
28
When a query is sent from the master to the share group address 15, the slave addresses 1 and 2 start positioning
operation. When each slave executes the processing, a response is returned sequentially. The order in which responses
are returned is set in the “Share control local ID” parameter. (
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Query
Share group address 15
Master
Transmit
Receive
Transmit
Receive
Transmit
Receive
Response
Slave address 1
Response
Slave address 2
Slave address 1
Motor operation
Slave address 2
Motor operation
Corresponding function code
Function codes and message lengths supported by the ID share mode are shown below.
Function code
Function
Number of registers
03h
Reading from holding registers
1 to 24
10h
Writing to multiple holding registers
1 to 24
17h
Read/write of multiple holding registers
Read: 1 to 24
Write: 1 to 24
8-2
Flow of setting of ID share mode
To read/write data in the ID share mode, setting the share group and the data to be read/written is required.
Setting the share group
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Setting of data to be read or written
Executing read/write
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