Eaton ELC-PB - Page 79

ELC Programming Manual
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2-50
3
(Triple frequency)
A
B
2-phase
2 inputs
4
(4 times frequency)
A
B
ELCM-PH/PA:
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 designated with only one high speed counter. Double designation on the same input or the
same counter will result in 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 - - -
Maximum Count Frequency for each counter (Unit: kHz)
ELCM 10 10 10 10 10 10 10 10 15 5 5
U: Count up D: Count down A: Phase A input B: Phase B input
Note:
1. U/D (Count up/Count down) can be specified by special M. OFF = count up; ON = count down.
2. R/F (Rising edge trigger/ Falling edge trigger) can also be specified by special M. OFF =
Rising; ON = Falling.
3. SHSC supports max 10kHz input pulse on single point. Max. 8 counters are applicable in the
same time.
4. For 2-phase 2-input counting, (X4, X5) (C233) and (X6, X7) (C234), max 5kHz. (X0,X2)
(C232), max 15kHz.
5. 2-phase 2-input counting supports double and 4 times frequency, which is selected in D1022
as the table in next page