Device

Bit Address

Word Address

32

bits

Address notation in External Device

Remarks

Coil

000001 - 001024

000001 - 001009

X0000 - X1023

Discrete Input

100001 - 101024

100001 - 101009

Y0000 - Y1023

 *2

Discrete Input

108193 - 115872

108193 - 115857

M0000 - M7679

 *2

Discrete Input

120481 - 122528

120481 - 122513

SM0000 - SM2047

 *2

Discrete Input

122529 - 130208

122529 - 130193

L0000 - L7679

 *2

Discrete Input

130721 - 132768

130721 - 132753

B0000 - B2047

 *2

Discrete Input

138913 - 139040

138913 - 139025

F000 - F127

 *2

Discrete Input

140961 - 143008

140961 - 142993

SB0000 - SB2047

 *2

Discrete Input

145057 - 149152

145057 - 149137

S0000 - S4095

 *2

Discrete Input

153249 - 153760

153249 - 153745

TC000 - TC511

 *2

Discrete Input

155297 - 155808

155297 - 155793

TS000 - TS511

 *2

Discrete Input

157345 - 157360

157345 - 157345

STC00 - STC15

 *2

Discrete Input

159393 - 159408

159393 - 159393

STS00 - STS15

 *2

Discrete Input

161441 - 161696

161441 - 161681

CC000 - CC255

 *2

Discrete Input

163489 - 163744

163489 - 163729

CS000 - CS255

 *2

Holding Register

400001,00 - 408000,15

400001 - 408000

D0000 - D7999

 

Holding Register

420481,00 - 430480,15

420481 - 430480

SD0000 - SD9999

 

Holding Register

430721,00 - 431744,15

430721 - 431744

W0000 - W1023

 

Holding Register

440961,00 -  441984,15

440961 - 441984

SW0000 - SW1023

 

Holding Register

453249,00 - 453760,15

453249 - 453760

TN000 - TN511

 

Holding Register

457345,00 - 457360,15

457345 - 457360

STN00 - STN15

 

Holding Register

461441,00 - 461696,15

461441 - 461696

CN000 - CN255

 

*2Write disable.

IEC61131 Syntax Address Description

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

 

 

NOTE

Supported Devices Symbol and Terms

IEC61131 Syntax Address Mapping

Address mapping in BLUE is as follows. %MD and %MF use two sequential words form the specified address.