Programming Instructions

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Modbus communication register Page 32/40

Communication programming instructions

V. Modbus communication register

1) Address of Modbus registers

The registers are numbered in accordance with the Modbus standard. These are “HOLDINGS REGISTER” on the

range of registers from 40001 to 49999.

Some software and Modbus controllers use an address from 0 to 65535.

Modbus register 40001 therefore corresponds to Modbus address 0, register 40002 corresponds to address 1 and so

on and so forth.

Modbus

Number of

registers

Name Access Format Description

Interfaces

41001

2 signal_RI1 r

REAL

Signal on RI RI1 input [Ohm]

41003

2 signal_RI2 r

REAL

Signal on RI RI2 input [Ohm]

41005

2 signal_AI1 r

REAL

Current on input AI1 [mA]

41007

2 signal_AI2 r

REAL

Current on input AI2 [mA]

41009

2 signal_SI1 r

REAL

Conductivity on input SI [µS]

41011

2 signal_SI2 r

REAL

Temperature on input SI [°C]

41013

2 signal_K1 r

REAL

Signal on DIx input [Depends switch config]

41015

2 signal_K2 r

REAL

Signal on DIx input [Depends switch config]

41017

2 signal_MI1 r

REAL

Signal on MI1 input [Depends on module]

41019

2 signal_MI2 r

REAL

Signal on MI2 input [Depends on module]

41031

1 signal_DI1 r

BOOL

0=OPEN / 1=CLOSE

41032

1 signal_DI2 r

BOOL

0=OPEN / 1=CLOSE

41033

1 signal_DI3 r

BOOL

0=OPEN / 1=CLOSE

41034

1 signal_DI4 r

BOOL

0=OPEN / 1=CLOSE

41035

1 signal_DI5 r

BOOL

0=OPEN / 1=CLOSE

41036

1 signal_DIS r

BOOL

0=OPEN / 1=CLOSE (on input SI)

41041

1 state_PO1 r

BOOL

0=OPEN / 1=CLOSE

41042

1 state_FO1 r

BOOL

0=OPEN / 1=CLOSE

41043

1 state_FO2 r

BOOL

0=OPEN / 1=CLOSE

41044

1 state_FO3 r

BOOL

0=OPEN / 1=CLOSE

41045

1 state_FO4 r

BOOL

0=OPEN / 1=CLOSE

41046

1 state_RO1 r

BOOL

0=OPEN / 1=CLOSE

41056

2 signal_AO1 r

REAL

Signal on AO1 output [mA]

41058

2 signal_AO2 r

REAL

Signal on AO2 output [mA]

41076

1 state_HI1 r

BOOL