Siemens SIMATIC S5 ET 200U - Timing Diagram

9-16
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
S Q x.0 Channel “0” ; Counter Enable
S Q x.1 Channel “1” ; (Set to Start Value)
R Q x.0 ; Counter Reset
R Q x.1 ;
A I x.0 ; Scan
A I x.1 ; “1” = Counter at Zero
Channel Number
Slot Address
Figure 9-5 Scanning the Counter Module (500 Hz)
Counting
Pulses
1
0
Enable
Time
R Q x.0S Q x.0
1
0
1
0
Output Q
6
0
Figure 9-6 Timing Diagram: Setting and Resetting an Output of the Counter Module
(500 Hz)
Timing Diagram
Function Modules