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
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f) C243 and C244 support count-up mode only and occupy input points X1 and X3 as reset
(“R”) functions. If the reset function is not needed, set the special M relays ON (M1243 and
M1244) to disable the reset function.
g) “Dir” refers to direction control function. OFF indicates counting up; ON indicates counting
down.
h) When X1, X3, X4 and X5 are applied for the reset function and the external interrupts are
disabled, users can define the reset function as Rising/Falling-edge triggered by special M
bits.
Reset
Function
X1 X3 X4 X5
R/F
M1271 M1273 M1274 M1275
i) When X1, X3, X4 and X5 are applied for the reset function and external interrupts are
disabled, users can define the reset function as Rising/Falling-edge triggered by special M
bits specified in the table: Applicable Software High Speed Counters. However, if external
interrupts are applied, the interrupt instructions have the priority in using the input points.
In addition, the ELC will move the current data in the counters to the data registers below
then reset the counters.
Special D
D1241, D1240
D1243, D1242
Counter C243
C246
C248
C252
C244
C250
C254
External Interrupt
X1
X4
X3
X5
When X0 (counter input) and X1 (external Interrupt I100/I101) work with C243, the
count value will be moved to D1240 and D1241 when the interrupt occurs. Then the
counter will be reset.
When X2 (counter input) and X3 (external Interrupt I300/I301) work with C244, the
count value will be moved to D1242 and D1243 when the interrupt occurs. Then the
counter will be reset.
When X0 (counter input) and X4 (external Interrupt I400/I401) work with C246, C248,
C252, the count value will be moved to D1240 and D1241 when the interrupt occurs,
Then the counter will be reset.
When X2 (counter input) and X5 (external Interrupt I500/I501) work with C244, C250,
C254, the count value will be moved to D1242 and D1243 when the interrupt occurs.
Then the counter will be reset.
Example: When C243 is counting and an external interrupt is triggered from X1(I101),
the count value in C243 will be moved to D0 immediately then C243 is reset. Then,
interrupt I101 executes.
Содержание ELC-PB
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