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
3-127
5.
High-speed counter provided in ELCM-PH/PA series Models:
There are two types of high speed counters provided by ELCM-PH/PA including Software High
Speed Counter (SHSC) and Hardware High Speed Counter (HHSC). The same Input point (X) can
be used with only one high speed counter. Using the same input with 2 high speed counters will
result in a syntax error when executing DCNT instruction.
Applicable Software High Speed Counters:
1-phase input
2 phase 2 input
C
X
C235
C236 C237
C238
C239
C240
C241
C242 C232
C233 C234
X0
U/D
A
X1
U/D
X2
U/D
B
X3
U/D
X4
U/D
A
X5
U/D
B
X6
U/D
A
X7
U/D
B
R/F
M1270 M1271 M1272 M1273 M1274 M1275 M1276 M1277 -
-
-
U/D
M1235 M1236 M1237 M1238 M1239 M1240 M1241 M1242 -
-
-
U: Count up
D: Count down
A: Phase A input
B: Phase B input
Note:
a) U/D (Count up/Count down) can be specified by special M bit. OFF = count up; ON = count
down.
b) R/F (Rising edge trigger/ Falling edge trigger) can also be specified by special M bit. OFF
= Rising; ON = Falling.
c) SHSC supports max 10kHz input pulse on single input point. Max. 8 counters are allowed
at the same time.
d) For 2-phase 2-input counting, (X4, X5) (C233) and (X6, X7) (C234), max 5kHz. (X0,X2)
(C232), max 15kHz.
e) 2-phase 2-input counting supports double and 4 times frequency, which is selected in
D1022 as follows:
Содержание ELC-PB
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