Siemens SIMODRIVE 611 universal Function Manual page 246

5 Communications via PROFIBUS DP
5.6 Net data (PKW and PZD area)
Example 1:
Find reference
marker
Mode
G1_STW.7 = 0
Function 1
G1_STW.0 = 1
Function 2
G1_STW.1= 1
Command
G1_STW.4 = 1
(activate function)
G1_STW.5 = 1
(read value)
Function 1 active
G1_ZSW.0 = 1
Function 2 active
G1_ZSW.1 = 1
Value 1/2 available
G1_ZSW.4 /.5 = 1
Gx_XIST2
Reference marker 1/2
Actual value transfer
1) Signal must be reset by user
Fig. 5-14 Function chart for "find reference marker"
5-246
Assumptions for the example:
S
Distance–coded reference marker
S
Two reference markers (function 1/function 2)
S
Closed–loop position control with encoder 1
1
Find reference marker
0
Reference marker 1
1
0
Reference marker 2
1
0
Activate function 1/2
1
0
1
0
1)
1
0
1)
1
0
1
0
1
0
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Reference marker 1
Reference marker 2
Read Read
value 1 value 2
Function 1 active
Function 2 active
Value 1
available
Actual position value
at reference marker 2
Actual position value
at reference marker 1
1 2
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05.00 08.99
Value 2
available