
APPENDICES
APP - 37
MELSEC-A
Appendix 3.2
Dissimilarities between A2SHCPU(-S1) and A2SCPU
The dissimilarities between the A2SHCPU(-S1) and A2SCPU are as follows :
Item
A2SHCPU(-S1)
A2SCPU
1
CPU processing speed *1
0.25
µ
s
1
µ
s
2
I/O points
2048 points *2
512 points
3
File register capacity (R)
Max. 8192 points (R0 to 8191)
Max. 4096 points (R0 to 4095)
4
CC-Link dedicated instruction
8
None
5
Startup model
A3
A2
6
Microcomputer program
There are some restrictions.
There is no restrictions.
7
Conventional memory cassette
A2SMCA-14KE/14KP
×
{
New-type memory cassette
A2SNMCA-30KE
{
{
Year, month, day, hour, minute, day of week (Automatic leap year calculation)
8
Clock precision
Precision
-3.1 to +5.3 s(TYP. +1.7 s)/d at 0 °C
-1.6 to +5.3 s(TYP. +2.4 s)/d at 25 °C
-9.6 to +3.6 s(TYP. -2.1 s)/d at 55 °C
Precision
-2.3 to +4.4 s(TYP. +1.8 s)/d at 0 °C
-1.1 to +4.4 s(TYP. +2.2 s)/d at 25 °C
-9.6 to +2.7 s(TYP. -2.4 s)/d at 55 °C
*1 :
I/O processing : during refresh and LD instruction execution
*2 :
Actual I/O points are the same as the AnS series, but this model has 2048 points of I/O device
for each CPU (X/Y0 to 7FF). The added I/O device can be used for MELSECNET (/B),
MELSECNET/MINI, or CC-Link.
Appendix 3.3
Precautions when Switching the Model
Appendix 3.3.1
PLC type setting
The PLC type becomes "A3" to enable the use of 2048 input device points X/Y,
file register R8192 points and LEAD/LEDB instructions.
Appendix 3.3.2
The precaution when performing the ROM cutoff
When performing the ROM cutoff of A1SJHCPU and A1SHCPU with SW4GP-
GPPA, the startup model must be changed as following.
Startup model
Before software version Q
A0J2H
Aafter software version R
A1S
Содержание A1SH
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