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Modbus services
•The Altivar 212 rejects the request because of an invalid starting address:
Request:
01
10
18 71
00 02
04
C4 00
17 70
AC 63
Response:
01
90
03
0C 01
•The Altivar 212 rejects the request because of an invalid quantity of registers:
Request:
01
10
18 70
00 03
04
C4 00
17 70
6C 7E
Response:
01
90
03
0C 01
•· The Altivar 212 rejects the request because of an invalid byte count:
Request:
01
10
18 70
00 02
03
C4 00
17 70
D8 6F
Response:
01
90
03
0C 01
Note: Reading values of parameters F870 and F871. Value of parameter F87p can be read by reading the address 187p.
Example for parameter F870: 0870: parameter assignment
1870: parameter value
S1A53844 01/2011 | 39 |