3 . I n s t r u c t i o n S e t
M N050 03003E F or mo re infor ma tio n vi sit:
w w w. e a t o n . c o m
3-139
longer available for DHSZ instruction. If comparators are used repeatedly, the syntax error
will be detected on the previous instruction..
Program Example 1:
1. When
D
is specified as Y0, then Y0~Y2 will also be used..
2.
When the DHSZ instruction is executed and the high-speed counter C246 is counting, if the
high or low limit value is reached, one of Y0~Y2 will be ON.
M1000
DCNT
C246
K20000
DHSZ
K1500
K2000
C246
Y0
Y0
Y1
Y2
When current value of C246 < K1500, Y0=On
When K1500 < current value of C246 < K2000, Y1=On
When current value of C246 > K2000, Y2=On
Program Example 2:
1.
When using the DHSZ instruction to control stop, high, or low speed, C251 is set as an AB
phase high-speed counter.
2.
When X30=ON, DHSZ will turn Y0=ON when the current value
≦
K2,000. In order to improve
this, use the DZCPP instruction to compare C251 against K2,000 during the first program scan
after going to RUN. When counting the current value
≦
K2,000, Y0=ON and the DZCPP
instruction is Pulsed. Instruction DZCPP can only be executed ONCE in a program. Y0 will
continue to be ON.
3.
When X20=OFF, Y0~Y2 will be reset to OFF.
X20
RST
C251
ZRST
Y0
Y2
M1000
DCNT
C251
K10000
X30
DZCPP
K2000
K2400
C251
Y0
DHSZ
K2000
K2400
C251
Y0
Summary of Contents for ELC-PB
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