Leroy-Somer digitax st User Manual page 45

8.8.3 Reading parameters using PPO 4 Word mode
Figure 8-5 shows the sequence of events required to read a drive parameter using the
PPO 4 Word non-cyclic channel.
Figure 8-5 PPO 4 Word Read sequence
START
Set OUT Word
0 to 0
Specify
PARAMETER in
OUT Word 1
Set OUT Word
2 to 0
Set OUT Word
3 to 0
Specify TASK ID
and MENU in OUT
Word 0
Table 8.13 shows the possible TASK ID and RESPONSE ID combinations that may be
seen when attempting to read a parameter value from a drive.
Table 8.13 PPO 4 Word Read TASK ID and RESPONSE ID combinations
Function
No Task
Request Parameter
Value (16-bit)
Request Parameter
Value (32-bit)
Request Parameter
Value (16-bit)
Request Last
(Parameter
Reference)
Request Last
Parameter
Reference
SM-PROFIBUS DP-V1 User Guide
Issue : a
SUCCESS:
Read 16-bit data
value from IN Word 3
TASK ID RESPONSE
ID
0 0
6 4
6 5
6 7
9 6
9 7
www.leroy-somer.com
0 7
CASE:
RESPONSE ID
4 5
TASK ID could not
SUCCESS:
Read 32-bit data
value from IN Word 2
and IN Word 3
END OF
SEQUENCE
Message status
No message active.
Parameter read successfully, 16-bit value
returned in word 3.
Parameter read successfully, 32-bit value
returned in words 2 and 3.
TASK ID 6 could not be executed. Check the
error code in IN word 3 for the reason why.
The highest parameter reference in specified
menu is available in IN word 3.
TASK ID 9 could not be executed. Check the
error code in IN word 3 for the reason why.
ERROR:
be executed
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