Mitsubishi Electric MELSEC-Q Structured Programming Manual page 74

FXCPU Structured Programming Manual
[Device & Common]
4. In FX /FX
1S 1N
1-phase
1-counting
input
1-phase
2-counting
input
2-phase
2-counting
input
H/W : Hardware counters
A : Phase A input
5. In FX /FX
2N 2NC
1-phase
1-counting
input
1-phase
2-counting
input
2-phase
2-counting
input
H/W : Hardware counters
A : Phase A input
*1. Hardware counters are switched to software counters when a comparison set/reset instruction for high
speed counter (DHSCS, DHSCR or DHSZ) is used.
→ For the condition under which hardware counters are handled as software counters, refer to
72
/FX PLCs
1NC
Counter No. Classification
C235 S/W
C236 S/W
C237 S/W
C238 S/W
C239 S/W
C240 S/W
C241 S/W
C242 S/W
C243 S/W
C244 S/W
C245 S/W
C246 S/W
C247 S/W
C248 S/W
C249 S/W
C250 S/W
C251 S/W
C252 S/W
C253 S/W
C254 S/W
C255 S/W
S/W : Software counters
B : Phase B input
PLCs
Counter No. Classification
*1
C235
H/W
*1
C236
H/W
C237 S/W
C238 S/W
C239 S/W
C240 S/W
C241 S/W
C242 S/W
C243 S/W
C244 S/W
C245 S/W
*1
C246
H/W
C247 S/W
C248 S/W
C249 S/W
C250 S/W
*1
C251
H/W
C252 S/W
C253 S/W
C254 S/W
C255 S/W
S/W : Software counters
B : Phase B input
Input terminal assignment
X000 X001 X002 X003
U/D
U/D
U/D
U/D
U/D R
U/D R
U/D R
U/D R
U D
U D R
U
U D R
U
A B
A B R
A
A B R
A
U : Up-counting input
R : External reset input S : External start input
Input terminal assignment
X000 X001 X002 X003
U/D
U/D
U/D
U/D
U/D R
U/D R
U/D R
U/D R
U D
U D R
U
U D R
U
A B
A B R
A
A B R
A
U : Up-counting input
R : External reset input S : External start input
2 Devices in Detail
2.7 High Speed Counter [C]
X004 X005 X006 X007
U/D
U/D
U/D R
S
S
D R
S
D R S
B R
S
B R S
D : Down-counting input
X004 X005 X006 X007
U/D
U/D
U/D R
S
S
D R
S
D R S
B R
S
B R S
D : Down-counting input
Subsection 2.7.9.