7.3  Operation
7.3.1  Input/Output Register
7-11
Slave CPU Synchronous Function
( 2 ) Slave Side Input/Output Data
 Input data details
Item Description
Scan Counter
One byte of area which allows a slave side application to check a value configured and updated by a 
master side application. It is used for the following purposes: 
• Checks the update of output data from the master.
• Determines the master behavior (in operation/in pause).
Note that the use of this area is optional. 
Slave Status
Status of MECHATROLINK transmission unit of a slave-status MP2300S. 
It is the same content as reported to the master. 
Data
Up to 6 words of data area for MECHATROLINK-II (17 Byte) and up to 13 words of data area for 
MECHATROLINK-II (32 Byte) are available. 
Low
High
Low
High
Low
High
Low
High
Low
High
Low
High
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
IW+0
IW+1
IW+2
IW+3
IW+4
IW+5
IW+6
IW+7
IW+14
OW+0
OW+1
OW+2
OW+3
OW+4
OW+5
OW+6
OW+7
[Output register]
OW+14
[Input register]
Scan counter
unused
Slave status
unused
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Low
High
Low
High
Low
High
Low
High
Low
High
Low
High
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 13
Low
High
Data 13
Low
High
Scan counter
unused
Control bit