4. AnSHCPU MODULE
4 - 1
MELSEC-
4. AnSHCPU MODULE
4.1 Performance Specifications
The memory capacities of AnSHCPU modules, performances of devices, etc., are
presented below.
Table 4.1 Performance specifications
Type
Item
A1SJHCPU A1SJHCPU-
S8
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)
Sequence instructions : 26
Basic instructions : 131
Application instructions : 106
CC-Link dedicated instructions : 8
Processing speed (sequence
instruction) (
µ
sec/step)
Direct : 1.0 to 2.3
Refresh : 1.0
I/O points 2048 *1
Actual I/O number of point 256 256
A2SH : 512,
A2SH-S1 : 1024
Watchdog timer (WDT) (msec) 10 to 2000
Memory capacity *2 (built-in RAM) 64 k bytes
A2SH : 64 k bytes,
A2SH-S1 : 192 k bytes
Main sequence Max. 8 k steps
A2SH : Max. 14 k steps,
A2SH-S1 : Max. 30 k steps
Sub sequence Unavailable
Internal relay (M) (points) 100 (M0 to 999)
Latch relay (L) (points) 1048 (L1000 to 2047)
Number of step relays (S) (points) 0 (Defaults to no value)
Link relay (B) (points) 1024 (B0 to 3FF)
Timer (T)
256 points
100 msec timer : Setting time 0.1 to 3276.7 sec (T0 to 199)
10 msec timer : Setting timer 0.01 to 327.67 sec (T200 to 255)
100 msec : Depending on setting
Retentive timer : (Setting time 0.1 to 3276.7 sec)
Counter (C)
256 points
Normal counter : Setting range 1 to 32767 (C0 to 255)
Interrupt program counter : Setting range 1 to 32767
Counter to be used in interrupt program
Data register (D) (points) 1024 (D0 to D1023)
Link register (W) (points) 1024 (W0 to W3FF)
Annunciator (F) (points) 256 (F0 to F255)
File register (R) (points) Max. 8192 (R0 to R8191)
Accumulator (A) (points) 2 (A0, A1)
The number of M + L + S = 2048
(set in parameters)
Set in
parameters
Set in
parameters
Number of instructions (types)
Program
capacity
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