Device
Bit Address
Word Address
32
bits
Remarks
Coil
000001 - 065536
000001 - 065521
or
Discrete Input
100001 - 165536
100001 - 165521
Input Register
-----
300001 - 365536
Holding Register
400001,00 - 465536,15
400001 - 465536
Device |
Bit Address |
Word Address |
32 bits |
Remarks |
|---|---|---|---|---|
Coil |
000001 - 065536 |
000001 - 065521 |
or
|
|
Discrete Input |
100001 - 165536 |
100001 - 165521 |
||
Input Register |
----- |
300001 - 365536 |
||
Holding Register |
400001,00 - 465536,15 |
400001 - 465536 |
|
*1You can set the data storing order in 32-bit data word units and 64-bit data double-word units in the Device Setting dialog box.
*2Write disable.
The following table compares IEC61131 and MODBUS syntax address descriptions.
Device |
MODBUS Syntax
|
IEC61131 Syntax |
||||||
|---|---|---|---|---|---|---|---|---|
Format |
0-based |
1-based |
||||||
Format |
Range |
First element |
Range |
First element |
Range |
First element |
||
Coil |
000001+i |
i = 0 to 65535 |
000001 |
%Mi |
i = 0 to 65535 |
%M00000 |
i = 1 to 65536 |
%M00001 |
Discrete Input |
100001+i |
i = 0 to 65535 |
100001 |
- |
- |
- |
- |
- |
Input Register (Word) |
300001+i |
i = 0 to 65535 |
300001 |
- |
- |
- |
- |
- |
Input Register (Word bit) |
300001+i,j |
i = 0 to 65535 j = 0 to 15 |
300001,00 |
- |
- |
- |
- |
- |
Holding Register (Word) |
400001+i |
i = 0 to 65535 |
400001 |
%MWi |
i = 0 to 65535 |
%MW00000 |
i = 1 to 65536 |
%MW00001 |
Holding Register (Word bit) |
400001+i,j |
i = 0 to 65535 j = 0 to 15 |
400001,00 |
%Mwi:Xj |
i = 0 to 65535 j=0 to 15 |
%MW00000:X00 |
i = 1 to 65536 j=0 to 15 |
%MW00001:X00 |
The addresses 100000 and 300000 cannot be accessed using IEC61131 syntax.
If you apply IEC61131 syntax to a project that has a discrete input or input register already set, the addresses become invalid.
Please refer to the precautions on manual notation for icons
in the table.
Supported Devices Symbol
and Terms
Address mapping in BLUE is as follows. %MD and %MF use two sequential words form the specified address.
