Mitsubishi Electric A800 Programming Manual page 4

3.8 Values that can be used in sequence programs................................................. 82
3.8.1 BIN (binary) .................................................................................................................................. 83
3.8.2 HEX (hexadecimal)....................................................................................................................... 84
3.9 Explanation of devices .......................................................................................... 85
3.9.1 Device list ..................................................................................................................................... 85
3.9.2 I/O X and Y ................................................................................................................................... 86
3.9.3 Internal relay M ............................................................................................................................. 87
3.9.4 Timer T ......................................................................................................................................... 88
3.9.5 100 ms timer, 10 ms timer, and 100 ms retentive timer ............................................................... 88
3.9.6 Processing and accuracy of timers............................................................................................... 89
3.10 Counter C................................................................................................................ 91
3.10.1 Count process in refresh mode .................................................................................................... 92
3.10.2 Maximum counting speed of counter............................................................................................ 92
3.11 Data register D ....................................................................................................... 93
3.12 Special relays and special registers .................................................................... 94
3.13 Function list............................................................................................................ 95
3.14 RUN/STOP method of PLC function from an external source (remote RUN/
STOP) ...................................................................................................................... 96
3.15 Watchdog timer (watchdog error supervision timer) ......................................... 98
3.16 Self-diagnostic function ........................................................................................ 99
3.16.1 Operation mode when there is an operation error........................................................................ 99
3.17 Registering file password ................................................................................... 100
3.18 Output (Y) status settings when STOP status → RUN status.......................... 101
3.19 Structure of instructions ..................................................................................... 102
3.20 Bit device processing method ............................................................................ 103
3.20.1 1-bit processing .......................................................................................................................... 103
3.20.2 Digit specification processing ..................................................................................................... 103
3.21 Handling of numerical values ............................................................................. 106
3.22 Operation error..................................................................................................... 107
3.23 Sequence instructions list .................................................................................. 108
3.23.1 How to view the instruction list table........................................................................................... 108
3.23.2 Sequence instructions list........................................................................................................... 110
3.23.3 Basic instructions........................................................................................................................ 112
3.23.4 Application instructions............................................................................................................... 116
3.23.5 Display instruction ...................................................................................................................... 117
3.24 How to view instructions..................................................................................... 118
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