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MELSEC-Q
APPENDICES
Appendix 2 Difference Between A1SD62, A1SD62E and A1SD62D (S1)
The following table lists the difference between A1SD62, A1SD62E and A1SD62D
(S1).
Model name
Function
QD62 D62E D62D A1SD62 A1SD62E A1SD62D (S1)
Counting
32-bit signed binary counter
(-2147483648 to 2147483647)
32-bit unsigned binary counter
(0 to 16777215)
Number of I/O occupied
points
16 points 32 points
Maximum counting speed 200 kPPS 500 kPPS 100 kPPS 200 kPPS
CW/CCW pulse input Function available No function
Linear counter
function
Function available No function
Ring counter
function
Function available
(Preset and coincidence output function
can be used independently of the ring
counter setting)
Function available
(The ring counter operation only between
the preset value and the coincidence output
point. Setting values cannot be changed
during operation)
Coincidence
detection function
Function available
(program interrupt allowed)
Function available
(coincidence detection only)
Counter
Overflow detection
function
Function available No function
Maximum and minimum
value settings for the ring
counter function
Can be set Cannot be set
Utility package support Function available No function
Fuse broken detection
Function available
(Only broken fuses are detected, LED display)
Function available
(Both broken fuses and external power
off are detected)
POINT
Programs that were used in earlier products such as A1SD62 (E/D/D-S1) cannot
be used because the I/O signals and the buffer memory configuration of these
products differ from those of QD62 (E/D). The conventional dedicated instructions
cannot be used.
A