Table of Contents
Advertisement
2. PERFORMANCE
2.5 Performance of the High-Speed Counter
2.5.1 High-speed counter performance list
Item
Counting speed selection setting
Number of channels
Count input
Pulse input mode
Counting
Counter
Comparison output
External input
Interrupt output
Counting Speed Selection Setting
Rise/fall time
t=2.5 s or less
t=25 s or less
t=500 s or less
This section provides the high-speed counter performance of the A1FXCPU.
Table 2.9 gives the high-speed counter performance list of the A1FXCPU.
Table 2.9 Performance List
Phase
Count input signal
1-phase input
speed
2-phase input
(max.)
Counting range
Type
Min. count pulse width
(duty ratio 50%)
Comparison range
Comparison result
Preset
Disable/latch trigger
Coincidence output
Countalbe Counting Speed
1-phase input
60kpps
10kpps
─
1 phase/2 phase: 60kpps/1 phase: 10kpps, 2 phase: 7kpps
1-phase input, 2-phase input
CH.1 A : XA,
CH.2 A : XB,
1-phase input multiplied by 1, 1-phase input multiplied by 2
2-phase input multiplied by 1, 2-phase input multiplied by 2,
2-phase input multiplied by 4
UP/DOWN preset counter + ring counter function
(1-phase input, 2-phase input)
Set value < count value (M9147/M9167)
Set value = count value (M9148/M9168)
Set value > count value (M9149/M9169)
60k
2-phase input
1-phase input
60kpps
10kpps
10kpps
1kpps
─
500kpps
2 - 14
Specifications
2 channels
B : XC
B : XD
60kpps
60kpps
0 to 16777215
17 s
8.5 s
8.5 s
0 to 16777215
CH.1 : X8
CH.2 : X9
CH.1 : X6
CH.2 : X7
CH.1 : I12
CH.2 : I13
10k
2-phase input
7kpps
700kpps
250kpps
MELSEC-A
t
t
Advertisement
Table of Contents
