App - 39
APPENDIX
Appendix 3 Precautions when Replacing AnSCPU with AnSHCPU
Appendix 3.1 Differences between A1SHCPU and A1SCPU
The differences between the A1SHCPU and A1SCPU are as follows:
*1 I/O processing: during refresh and LD instruction execution
*2 The number of the actual I/O points is the same as the AnS series, but this model has 2048
points of I/O device for each CPU (X/Y0 to X/Y7FF). The added I/O devices can be used for
MELSECNET (/B), MELSECNET/MINI, or CC-Link.
*3 The comment points for comments that can be stored in the CPU module is 1600 points,
while up to 3648 points of comment can be created using the GPP function.
Item A1SHCPU A1SCPU
1
Operation processing speed
*1
0.33 s 1 s
2 Number of I/O points
2048 points
*2
256 points
3 File register capacity (R) MAX. 8192 points (R0 to 8191) MAX. 4096 points (R0 to 4095)
4 Memory capacity 64k bytes 32k bytes
5 Comment points MAX.3648 points
MAX.1600 points
*3
6
CC-Link dedicated
instructions
8 Not provided
7 Startup model A3 A1S
8 Memory write protection range First 32k bytes First 20k bytes
9 Microcomputer program There are some restrictions. There are no restrictions.
10
Conventional memory
cassette
A1SMCA-2KE/8KE/8KP
New-type memory cassette
A1SNMCA-2KE/8KE/8KP
11 Clock precision
Year, month, day, hour, minute, day of the week
(automatic detection of the leap year)
Precision
-3.1 to +5.3s(TYP.+1.7s)/d at 0
-1.6 to +5.3s(TYP.+2.4s)/d at 25
-9.6 to +3.6s(TYP.-2.1s)/d at 55
Precision
-2.3 to +4.4s(TYP.+1.8s)/d at 0
-1.1 to +4.4s(TYP.+2.2s)/d at 25
-9.6 to +2.7s(TYP.-2.4s)/d at 55
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