KEYENCE Visual KV Series - Manual (Page 241)

4.3 Setting and Operation of High-speed Counters
3-217
Visual KV
Series
1
4
Chapter 4 High-speed Counters
2008
2002
0000
2214
RES
2213
SET
2114
RES
2113
SET EI
#60000
CTC0
CTH0
RES
0500
RES
CTH0
0004
CTH1
0005
HSP
0005
HSP
0006
HSP
0004
HSP
0007
INT
CTC0
2002 2009
2009
2002
ENDH
RETI
END
0500
SET
CTH0
RES
CTH1
RES
CTH1
LDA
#60000
CMP
4.3.7 Applications of High-speed Counters
Comparing encoder values
Uses two encoders to input phase differential signals to input relays 0004 and 0006,
and 0005 and 0007. Turns ON output relay 0500 if the count value of 0005 and 0007
is greater than that of 0004 and 0006 when 0004 and 0006 count "60000".
Compares current value of CTH1 with
"#60000". Turns ON 0500 when value is
greater than "#60000". Turns OFF 0500
when value is smaller.
Initial setting
SET 2113
RES 2114
SET 2213
RES 2214
Setting for CTH0
Setting for CTH1
Sets input time constant of inputs 0004,
0005, 0006, and 0007 to 10 µs.
Phase differential input to inputs 0004 and
0006
Specifies preset value of CTC0 to "#60000".
Phase differential input to inputs 0005 and
0007
Setting multi-level high-speed counters
Sets the preset value of the high-speed counter comparator for the high-speed
counter for input relay 0005 as follows:
#01000 ➞ DM0000
#02000 ➞ DM0001
#03000 ➞ DM0002
When the current counter value reaches one of the preset values, the respective
output turns ON as follows:
DM0000 ➞ 0500 turns ON.
DM0001 ➞ 0501 turns ON.
DM0002 ➞ 0502 turns ON.
DM0000
STA
#01000
LDA
#02000
LDA
DM0001
STA
DM0000
CMP
CTH1
LDA
DM0001
CMP
DM0002
CMP
#03000
LDA
DM0002
STA
2008
0001
2009
2009
2009
2002
CTH1
0005
2002 HSP
0005
0500
0501
0502
KVNKA Chap 04_1.p65 08.3.11, 0:06 PM 217