ID share mode
26
8
ID share mode
This chapter describes the ID share mode of Modbus RTU specific to the mini Driver.
When controlling the driver with other methods than the ID share mode, refer to the
AZ
Series OPERATING MANUAL
Function Edition and “9 Addresses and codes lists” on p.46.
8-1
Overview of ID share mode
The ID share mode is Oriental Motor’s unique transmission mode in which multiple slaves share a communication ID.
The master sends a query to multiple slaves. Each slave executes the processing and returns a response.
To read/write in the ID share mode, it is required to set a group of slaves (share group) that operates in the ID share
mode.
Query
Response
Master
Slave
Slave 1
Slave 2
Slave 3
Slave 1
Slave 2
Slave 3
Even if a share group is set, communication can be performed in the unicast mode or the broadcast
mode.
Features of ID share mode
•
A query can be sent from the master to multiple slaves at once. Synchronization between slaves is superior
compared to the unicast mode.
•
From the master, different information can separately be read/written from/to each slave that shares the
communication ID. Unlike the broadcast mode, different information can be written to multiple slaves at one time.
•
When a query is sent from the master, each slave executes the processing and returns a response. Unlike the group
send, a response is returned from all slaves.
Overview of read
When reading data in the ID share mode, an ID of data to be read is required to set in the “Share read data” parameter.
Setting the ID of data to be read in the “Share read data” parameter can read a value using the “Share read data” area
of the ID share register address (*).
* It is the address dedicated to the ID share mode.
Setting an ID of data to be read
Register address
Name (parameter)
ID
Data to be read
Upper: 0990h (2448)
Lower: 0991h (2449)
Share read data 0
Setting with unicast
mode or
MEXE02
0040h (64)
Present alarm
Upper: 0992h (2450)
Lower: 0993h (2451)
Share read data 1
007Ch (124)
Driver temperature
Upper: 0994h (2452)
Lower: 0995h (2453)
Share read data 2
007Dh (125)
Motor temperature
Reading a value
ID share register address
Name (area)
Value
Data to be read
Upper: 0000h (0)
Lower: 0001h (1)
Share read data 0
Read with ID share
mode
0
Present alarm
Upper: 0002h (2)
Lower: 0003h (3)
Share read data 1
383
Driver temperature
Upper: 0004h (4)
Lower: 0005h (5)
Share read data 2
426
Motor temperature
