Mitsubishi Electric Melsec A Series, Руководство пользователя

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5
Table 2.2 CPU Module Performance Specifications (continued)
Performance
Item
A2ACPU A2ACPU-S1 A3ACPU
Remarks
6k steps
Main sequence program
capacity
(Can be set to max. 14k steps
(Can be set to
max. 30k steps)
Set in parameters.
Sub-sequence program
capacity
Absent
0 to 30k steps
can be set.
Set in parameters.
I/O points 512 points 1024 points 2048 points
The number of points
which can be used for
accessibility to actual
I/O modules.
STOP
→
RUN output
mode
Selection of re-output of operation state before STOP
(default)/output after operation execution
Set in parameters.
Self-diagnostic functions
Watchdog error timer (watchdog timer 200 msec fixed)
Memory error detection, CPU error detection, I/O error
detection, battery error detection, etc.
Starting method at RUN
Automatic restart when "RUN" switch is moved to ON
position (initial start)
Allowable momentary
power failure time
Depends on used power supply module
Latch (power failure
compensation) range
Using parameter setting, M, L, and S relays 0 to 8191,
can be set in latch relay as L0 to L8191 (defaults to
L1000 to L2047)
Set range in
parameters.
Remote RUN/PAUSE
contact
RUN/PAUSE contact point can be set by the
parameter settings for A2A, A2A-S1, and A3 within the
following range.
A2A: X0 to X1FF, A2A-S1: X0 to X3FF, and A3A: X0
to X7FF.
Operation mode at the
time of error I/O, special function module error: Stop, Operation
error: continue Can be changed to
operation error stop.
Clock function
Year, month, day, hour, minute, second, day of the week
(leap year is automatically identified.)
Accuracy
-2.3 to + 4.4s (TYP. +1.8s) /d at 0
°
C
-1.1 to + 4.4s (TYP. +2.2s) /d at 25
°
C
-9.6 to + 2.7s (TYP. -2.4s) /d at 55
°
C
Step RUN
y
Execution per instruction
y
Execution per circuit ladder block
y
Execution according to loop count and step interval
specification
y
Execution according to loop count and break point
specification
y
Execution according to device status
Interrupt
processing
Interrupt program can be run in response to a signal
from an interrupt unit or by a constant-cycle interrupt
signal.
Other
functions
Data link
Data link system incorporating local PCs and/or
remote I/O can be constructed.