Register allocation of the process data words

The process data words are allocated to the Modbus registers shown in the table. The status and control words have a fixed allocation. The other process data words can be freely configured in parameter group P5-xx.

The table shows the standard assignment of process data words. All other registers are usually allocated in such a way that they correspond to the parameter number (101 = P1-01). However, this does not apply to parameter group 0.

Tabs

Upper byte

Lower byte

Command

Type

1

PO1 control word (fixed)

03, 06, 16

Read/Write

2

PO2 (default setting in P5-09 =1; speed setpoint)

03, 06, 16

Read/Write

3

PO3 (default setting in P5-10 =7; no function)

03, 06, 16

Read/Write

4

PO4 (default setting in P5-11 =7; no function)

03, 06, 16

Read/Write

5

Reserved

-

03

Read

6

PI1 status word (fixed)

03

Read

7

PI2 (default setting in P5-12 =1; actual speed)

03

Read

8

PI3 (default setting in P5-13 =2; actual current)

03

Read

9

PI4 (default setting in P5-14 =4; power)

03

Read

For more registers, see chapter Parameter registers.

The complete allocation of parameters and registers as well as the scaling of data can be found in the memory allocation plan of chapter Parameter registers.

INFORMATION

Many bus masters address the first register as register 0. It might therefore be necessary to deduct the value "1" from the register number given below to obtain the correct register address.