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35
5
EXPLANATION OF INDICATED- VALUE-RELATED FUNCTIONS
35
EXP
LANATION OF
INDICATED-
VALUE-RELATED FUNCTIONS
Chapter
5
5-1.
A/D conversion speed select
The A/D conversion speed can be selected from 300 times/sec. or 3000 times/sec.
≪
Setting value
≫
0
:
300 times/sec.
1
:
3000 times/sec.
If the A/D conversion speed is changed, the processing shown below will follow it.
●
Comparison
According to the processing of load data, the comparison processing also follows the A/D
conversion speed.
●
Digital filter
The unit time in frequency setting changes.
Therefore, the average processing time will also change.
When 30 times is set at 3000 times/sec., 30 times ÷ 3000 times/sec.= 10msec.
When 30 times is set at 300 times/sec., 30 times ÷ 300 times/sec. = 100msec.
See "5-3.Digital filter" on page 37.
●
I/O scan time
For example, the delay time of output signals changes.
The delay time is 0.7 msec at 3000 times/sec, and 7 msec (10 times) at 300 times/sec.
●
BCD output interface (option)
The fastest setting of update rate is 300 times/sec when the A/D conversion speed is 300 times/
sec.
●
D/A converter (option) output
Updating of load data follows the A/D conversion speed.
■
A/D conversion speed select setting method
1.
Select setting mode 3.
Press
→
twice.
2.
Set "A/D conversion speed."
Press
five times.
⇒
"A/D conversion speed" is
displayed.
Press
once, and present set value blinks.
Input the setting value with
.
Press
to validate it.
3.
Press
twice to go back to the indicated value display.
5
EXPLANATION OF INDICATED-
VALUE-RELATED FUNCTIONS
Ch1 Ch
2
H I
LO
H I
LO
FNC
H I
Ch1 Ch
2
OK
LO
PEAK
HOLD
H I
LO
H I
LO
ESC
Summary of Contents for F350
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