Instruction Manual

4. Communication
51
Modbus
4.3.3 Structure of Modbus Status Registers
The layout of the Modbus status registers is shown below.
ᵎᵎᵎᵎ
(Reserved for system)
(Note)
ᵎᵏᵎᵎ
῍ᴾ
ᵎᵏᵎᵤ
Device status register 1
[DSS1]
ᵎᵏᵏᵎ
῍ᴾ
ᵎᵏᵏᵤ
Device status register 2
[DSS2]
ᵎᵏᵐᵎ
῍ᴾ
ᵎᵏᵐᵤ
Expansion device status register
[DSSE]
ᵎᵏᵑᵎ
῍ᴾ
ᵎᵏᵑᵤ
Position number status register
[POSS]
ᵎᵏᵒᵎ
῍ᴾ
ᵎᵏᵒᵤ
Zone status register
[ZONS]
ᵎᵏᵓᵎ
῍ᴾ
ᵎᵏᵓᵤ
Input port monitor register
[DIPM]
ᵎᵏᵔᵎ
῍ᴾ
ᵎᵏᵔᵤ
Output port monitor register
[DOPM]
ᵎᵏᵕᵎ
῍ᴾ
ᵎᵏᵕᵤ
Special input port register
[SIPM]
ᵎᵏᵖᵎ
῍ᴾ
ᵎᵏᵖᵤ
Expansion system status register
[SSSE]
(Reserved for system)
(Note)
ᵎᵒᵎᵎ
῍ᴾ
ᵎᵒᵎᵤ
Device control register 1
[DRG1]
ᵎᵒᵏᵎ
῍ᴾ
ᵎᵒᵏᵤ
Device control register 2
[DRG2]
ᵎᵒᵐᵎ
῍ᴾ
ᵎᵒᵐᵤ
Expansion device control register
[DRGE]
ᵎᵒᵑᵎ
῍ᴾ
ᵎᵒᵑᵤ
Position number specification register
[POSR]
ᵤᵤᵤᵤ
(Reserved for system)
(Note)
Note Areas reserved for the system cannot be used for communication.