1
CONTENTS
INTRODUCTION
•...••...•••••....••.•••••••••••....•••••.•••••••••••••
1-1
-1-11
1.1 General Description of Operation
1-2
1.1.1 ON/OFF data communication between the A2C and the remote I/O module • . . .
..
1 - 2
1.1.2
Data communication between the A2CCPU and the remote terminal module
.....
1 - 4
1.2
Features.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
1 - 5
1.3
General Terms and Abbreviations 1 - 9
1.4
Reference Manuals
.........................................................•
1 - 11
I
2 SYSTEM CONFIGURATION
2-1
-2-16
2.1 Overall Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2.2
Notes on System Construction 2 - 3
2.3
System Equipment 2 - 8 4
2.3.1 Modules which can be connected to the A2CCPU 2 - 8
2.3.2
Peripheral devices 2 - 15
3 GENERAL SPECIFICATIONS
3-1
4 A2CCPU
••••••...••••....••••••••••••..••....••••••.•...••••...••••.
4-1
-
4-94
4.1 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . .
..
4 - 1
4.1.1 Repeated operation processing 4 - 4
4.1.2
In~ial
processing 4 - 4
4.1.3
END processing 4 - 5
4.1.4
Timer processing and accuracy 4 - 6
4.1.5
Counter processing and maximum counting speed 4 - 8
4.1.6 Operation processing at momentary power failure 4 - 9
4.1.7
Scan time 4
-10
4.1.8 Watch
dog
timer
(WDl)
4 - 11
4.1.9
RUN. STOP. PAUSE operation processing
4-13
4.2 Functions 4 - 18
4.2.1
Constant scan 4 - 19
4.2.2
Power failure compensation for device data in the A2C
(LATCH function) 4 - 22
4.2.3 Running and stopping the A2C from external devices
(Remote RUN/STOP function)
4 - 24
4.2.4
Stopping the sequence program operation retaining outputs (PAUSEfunction)
..
4 - 26
4.2.5
Status latch
.......................................................•..
4 - 28
4.2.6
Sampling trace 4 - 30
4.2.7
Offline
sw~ch
function 4 - 33
4.2.8 Setting priority for ERRORLED indication 4 -
35
4.2.9 Control functions of remote I/O modules and remote terminal modules 4 - 37
4.2.10
Outputfrom the ERRterminals 4 - 41
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