Mitsubishi MELSEC-A A1SCPUC24-R2, User Manual

Page: 30 / 160

4
2.1.2 AnSHCPU Module Performance Specifications
The memory capacity, device performances and other specifications of
AnSHCPU modules are provided below.
*1 The maximum total memory that can be used for parameters, T/C set values,
program capacity, file registers, number of comments, sampling trace, and
status latch is 32 k/64 k bytes. The memory capacity is fixed. No expansion
memory is available. Section 4.1.7 shows how to calculate the memory
capacity.
*2 The I/O device after the actual input points can be used as MELSECNET(/B),
MELSECNET/MINI-S3, or CC-Link.
Table 2.2 Performance specifications
Type
Item
A1SHCPU A2SHCPU(S1)
Control system Repeated operation (using stored program)
I/O control method Refresh mode/Direct mode selectable
Programming language
Language dedicated to sequence control. Relay symbol
type and logic symbolic language, MELSAP-II(SFC)
Processing speed
(sequence instruction) Direct: 0.33 to 2.2
µ
s/step
Refresh : 0.33
µ
s/step
Direct: 0.25 to 2.15
µ
s/step
Refresh : 0.25
µ
s/step
Number of I/O device points 2048 *2
Number of I/O points 256 points
A2SH : 512 points,
A2SH-S1 : 1024 points
Watchdog timer (WDT) 10 to 2000 ms
Memory capacity *1
(built-in RAM)
64k bytes
A2SH : 64 k bytes,
A2SH-S1 : 192 k bytes
Program capacity
Main sequence Max. 8 k steps
A2SH : Max. 14 k steps,
A2SH-S1 : Max. 30 k steps
Sub sequence Unavailable
Self-diagnostics functions
Watchdog error monitor, Memory error detection, CPU
error detection, I/O error detection, Battery error
detection, etc.
Operation mode at the time of error STOP/CONTINUE
STOP
→
RUN output mode
Output data at time of STOP restored/data output after
operation execution
Start method at the time of RUN
Initial start
(Automatic restart by turning on the "RUN" switch of the
CPU after power-ON/recovery from power failure)
Clock function
Year, month, day, hour, minute, second (Automatically
recognizes leap years.)
Accuracy
−
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
Allowable momentary power failure
period
Depends on power supply module
Current consumption (5 V DC) 0.3 A 0.4 A
Weight 0.33 kg 0.33 kg
Standard UL/cUL UL/cUL