Endless Counting - Siemens SIMATIC ET 200S Operating Instructions Manual

3.6.2

Endless Counting

Definition
In this mode, the 1Count5V/500kHz counts endlessly as of the load value:
• If the 1Count5V/500kHz reaches the upper count limit when counting up, and another
• If the 1Count5V/500kHz reaches the lower count limit when counting down, and another
• The upper count limit is set at +2147483647 (= 2
• The lower count limit is set at -2147483648 (= -2
Figure 3-2
Function of the Digital Input
Select one of the following functions for the digital input:
• Input
• Hardware gate
• Latch Function
• Synchronization
Function of the Digital Outputs
Select one of the following functions for each digital output:
• Output, no switching through comparator
• Activation at a counter status greater than or equal to the comparison value
• Activation at a counter status less than or equal to the comparison value
• Pulse on reaching the comparison value
• Switching at comparison values (DO1 only)
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05
count pulse then comes, it will jump to the lower count limit and continue counting from
there without losing the pulse.
count pulse then comes, it will jump to the upper count limit and continue counting from
there without losing the pulse.
Endless Counting with Gate Function
- 1).
31
).
31
1Count5V/500kHz
3.6 Count Modes
127