Endless Counting - Siemens SIMATIC ET 200S Operating Instructions Manual

3.6.2

Endless Counting

Definition
In this mode, the 1Count5V counts continuously starting from the load value:
● If the 1Count5V reaches the high count limit when counting up, and another count pulse
● If the 1Count5V reaches the low count limit when counting down, and another count
● The high counting limit is set to +2147483647 (2
● The low counting limit is set to -2147483648 (-2
Function of the Digital Input
For the "Function DI" parameter, select one of the following functions for the digital input:
● Input
● HW gate (see section "Gate Functions in Count Modes (Page 139)")
● Latch function (see section "Latch Function (Page 141)")
● Synchronization (see section "Synchronization (Page 143)")
Function of the Digital Outputs
For the "Function DO1" and "Function DO2" parameters, 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
● Switch at comparison values (DO1 only)
(see section "Behavior of the Outputs in Count Modes (Page 147)")
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
then comes, it will jump to the low count limit and continue counting from there without
losing a pulse.
pulse then comes, it will jump to the high count limit and continue counting from there
without losing a pulse.
Figure 3-2 Count Continuously with Gate Function
- 1).
31
).
31
1Count5V
3.6 Count Modes
131