11 TROUBLESHOOTING
Special Register List (Continued)
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| Set by | Corresponding | Corresponding | |
Number | Name | Meaning | Explanation | ACPU | |||
(When set) | CPU | ||||||
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| D9 | |||
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SD50 | Error reset | Error code that | • Stores error code that performs error reset | U | New | +Rem | |
performs error reset |
•All corresponding bits go ON when battery voltage drops.
•Subsequently, these remain ON even after battery voltage has
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| B4 B3 B2 B1 B0 |
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| Bit pattern |
| CPU module battery error |
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SD51 | Battery low | indicating where |
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| Memory card A alarm | S (Error) | New |
latch | battery voltage drop |
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| Memory card A error | |||
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| Memory card B alarm |
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| Memory card B error |
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| • When High Performance model QCPU is used, this flag is |
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| always OFF because memory card B is used as standard |
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| memory. |
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| Bit pattern | • Same configuration as SD51 above |
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| • Subsequently, goes OFF when battery voltage is restored to |
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SD52 | Battery low | indicating where | normal. | S (Error) | New |
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battery voltage drop | • When High Performance model QCPU is used, this flag is |
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| occurred | always OFF because memory card B is used as standard |
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| memory. |
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| AC/DC |
| • Every time the input voltage falls to or below 85% (AC |
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| Number of times for | power)/65% (DC power) of the rating during calculation of the |
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SD53 | DOWN | S (Error) | D9005 | +Rem | |||
AC/DC DOWN | CPU module, the value is incremented by 1 and stored in BIN | ||||||
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1The relevant station bit goes ON when any of the Installed MINI
2Goes ON when communications between the installed MINI
SD54 | MINI link | Error detection |
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| S (Error) | D9004 format | QnA | ||||||
errors | state |
| B0 | change | ||||||||||
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| B15 |
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| B9 B8 |
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| 8th |
| ......... | 1st | 8th |
| 1st |
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| module | module | module |
| module |
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| Information on 2 |
| Information on | 1 |
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SD60 | Blown fuse | Number of module | • Value stored here is the lowest station I/O number of the module | S (Error) | D9000 |
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number | with blown fuse | with the blown fuse. |
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| +Rem | ||||||
| I/O module | I/O module | • The lowest I/O number of the module where the I/O module |
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SD61 verification | verification error | S (Error) | D9002 |
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verification number took place. |
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| error number module number |
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| Annunciator | Annunciator |
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SD62 | • The first annunciator number to be detected is stored here. | (Instruction | D9009 |
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number | number |
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| Number of | Number of |
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SD63 | • Stores the number of annunciators searched. |
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| (Instruction | D9124 |
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annunciators | annunciators |
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| execution) |
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11 - 69 | 11 - 69 |