Mitsubishi Electric Melsec A Series - Functions

4. A2CCPU
-------------------- MELSEC-A
4.2 Functions
Functions of the CPU module are listed in Table 4.5.
Table 4.5 List of Functions
Function Description
Ref~r to:
• Execute the sequence program at the predetermined intervals inde-
Constant scan
pendently of the scan time.
Section 4.2.1
• Setting allowed between 10 and 2000 msec.
• Retains
device data if the PC Is switched off or reset or momentary
Latch (power failure
powerfailure occurs 20 msec 01 longer.
Section 4.2.2
compensation)
• L, B, T, C, 0 and W can be latched.
Remote RUN/STOP
• Allows remote run/stop from external device (e.g. peripheral,
Section 4.2.3
external input, computer) with RUN/STOP switch in RUN position.
• Stops operation with output (Y) status retained.
Pause
• Pause
function may be switched on by any of the following ways:
Section 4.2.4
• Remote pause contact
• Peripheral
• Stores all device data in the status latch area in the A2C when the
Status latch
status latch condition is switched on.
Seetion 4.2.5
• The stored data can be monitored by the peripheral.
• Samples the specified device operating status at predetermined
intervals and stores the sampling result in the sampling trace area in
Sampling trace
the A2C. Section 4.2.6
• The stored data can be monitored by the peripheral.
Offline switch
• Allows the device (Y, M, L, S, F, B) used with the OUT instruction to
Section 4.2.7
be disconnected from the sequence program operation processing.
Priority setting
• Sets on/off of the ERROR LED in the case of error. Section 4.2.8
ERROR LED
4-18
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