Siemens SINAMICS S120 - Page 115

Communication via PROFIBUS
Cyclic communication
4-115
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Example 1: Measurement on-the-fly
Assumptions for the example:
S Probe with positive edge (function 1)
S Position control with encoder 1
Mode
G1_CTW.7 = 1
Function 1
G1_CTW.0 = 1
Command
G1_CTW.4 = 1
(activate function)
G1_STW.5 = 1
(read value)
Function
active
G1_STW.0 = 1
Value available
G1_STW.4 = 1
Probe deflected
G1_STW.8
Probe edge
Accept actual value
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Measurement on-the-fly
Probe positive edge
Activate function 1
Function 1
active
Value 1 available
1)
1) Signal must be reset by user
1
0
Read value
1
Fig. 4-11 Function chart for “measurement on-the-fly”