Mitsubishi FX3UC Series - Page 165

159
FX3UC Series Programmable Controllers
User’s Manual - Hardware Edition
5 Input Specifications and External wiring
5.5 High-speed Counters (C235 to C255)
1
Outline
2
External Dimensions
3
Generic Specifications
4
Power Supply Specifications
5
Input Specifications
6
Output Specifications
7
Examples of Wiring for Various Uses
8
Terminal Block
9
CC-Link/LT Master FX
3UC
(LT only)
10
Display module FX
3UC
(LT only)
5.5.7 [Function switching] procedures for using 2-phase 2-count input counters C251 to
C255 in 4 edge count mode
The 2-phase 2-count input counters C251 to C255 are normally set to 1 edge count mode. The counters can
be operated in 4 edge count mode through programming as shown below.
Counter No. To use 4 edge count 2-phase 2-input counter Details of change
C251
1 edge count (before change)
4 edge count (after change)
C252
C253
C253(OP)
C254
C255
M8000
M8198
C251
K
Phase A
Phase B
+1
+1
Up-counting
Phase A
Phase B
-1
-1
Down-counting
Phase A
Phase B
+1
Up-counting
+1 +1 +1 +1
+1 +1 +1 +1
Phase A
Phase B
-1
Down-counting
-1 -1 -1 -1
-1 -1 -1 -1
M8000
M8198
C252
K
M8000
M8199
C253
K
M8000
M8199
C253
M8392
M8388
K
M8000
M8198
C254
K
M8000
M8199
C255
K