Modbus services

Read indirect block of 2 parameters:

Request:

01

03

18 75

00 02

D3 71

Response:

01

03

04

64 04

17 70

AA D6

Error response on invalid starting address:

Request:

01

03

18 76

00 02

23 71

Response:

01

83

03

01 31

Error response on invalid quantity of registers:

Request:

01

03

18 75

00 06

D2 B2

Response:

01

83

03

01 31

Note: Reading values of parameters F875 to F879. Value of parameter F87p can be read by reading the address 187p.

Example for parameter F875: 0875: parameter assignment

1875: parameter value

S1A53844 01/2011

35

Page 35
Image 35
Schneider Electric Altivar 212 manual Read indirect block of 2 parameters