34##.-0)*'")<
Section 6-5
$*+
Appendix D
Description of the Response Time
The Response Time of the CS1W-CT021/CT041 High-speed Counter Unit is the time between the Unit receiving
a count pulse (on one of the Counter inputs A or B) and the switching (ON or OFF) of a corresponding Digital
Output.
The Response Time can vary between 0.1 and 0.5 milliseconds, but is guaranteed to be less than 0.5
milliseconds. The following factors cause the Response Time to fluctuate:
•
the number of Counters simultaneously crossing a Range Limit or Comparison Value
•
the asynchronous (with respect to the Unit) Cyclic I/O Refresh triggered by the CS1-PLC
The maximum Response Time of 0.5 milliseconds can no longer be guaranteed and will temporarily become
longer than 0.5 milliseconds in case you make use of:
•
IOWR/IORD-instructions
•
IORF-instructions
•
Programmable Output Pulses
•
Rate Measurement for one or more Counters
•
Digital Inputs or Z-inputs
•
Outputs- and or Digital Inputs generating Interrupts to the CS1-PLC
MPU
pr
oce
s
sin
g
In p u t
circu itry
O u tp u t
circu itry
A
B
D ig ita l O u tp u t
C S 1 -C T 0 2 1 /C T 0 4 1
R e sp o n se T im e to sw itch
D ig ita l O u tp u t O N
R e sp o n se T im e to sw itch
D ig ita l O u tp u t O F F
W902-E2-03.book Seite 178 Donnerstag, 7. Oktober 2004 2:06 14
Содержание CS1W-CT021
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