11 TROUBLESHOOTING
Special Register List (Continued)
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| Explanation | ACPU | |||
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| (When set) | CPU | ||||||
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| D9 | |||
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SD381 |
| Information from | • Configuration is identical to that for the first module. |
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Ethernet | 2nd module |
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SD382 | instruction | Information from | • Configuration is identical to that for the first module. | S (Initial) | New |
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reception | 3rd module |
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SD383 | status | Information from | • Configuration is identical to that for the first module. |
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| 4th module |
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| • Stores the internal system software version in ASCII code. |
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| QnA | |||
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| The software version is stored |
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| in the lower byte position. |
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| Higher byte | Lower | byte The data in the higher byte |
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SD392 | Software | Internal system |
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| position is indefinite. | S (Initial) | D9060 |
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version | software version | For version "A", for example, "41H" is stored. |
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| Note: The internal system software version may differ from the |
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| version indicated by the version symbol printed on the |
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| Multiple PLC | Multiple PLC | • In a multiple PLC system configuration, the PLC number of the |
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SD395 | host CPU is stored. | S (Initial) | New | ||||||
number | number | Ver. B or later | |||||||
| PLC No. 1: 1, PLC No. 2: 2, PLC No. 3: 3, PLC No. 4: 4 |
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(3) System clocks/counters
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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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SD412 | 1 second | Number of counts in | • Following programmable controller CPU module RUN, 1 is | S (Status | D9022 |
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counter | added each second | change) |
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| • Count repeats from 0 to 32767 to |
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| 2n second | 2n second clock | • Stores value n of 2n second clock (Default is 30) |
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SD414 | clock | U | New |
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units | • Setting can be made between 1 and 32767 |
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| setting |
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SD415 | 2nms clock | 2nms clock units | • Stores value n of 2nms clock (Default is 30) | U | New | QCPU | |
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| • Setting can be made between 1 and 32767 |
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SD420 | Scan | Number of counts in | • Incremented by 1 for each scan execution after the CPU module | S(Every | New |
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counter | each scan | is set to RUN. | END |
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| • Count repeats from 0 to 32767 to | processing) |
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| Low speed |
| • Incremented by 1 for each scan execution after the CPU module | S(Every |
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SD430 | Number of counts in | is set to RUN. | New |
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scan | each scan | • Count repeats from 0 to 32767 to | END |
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| counter | processing) |
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| • Used only for low speed execution type programs |
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| : Not counted by the scan in an initial execution type program. | ||||
11 - 77 | 11 - 77 |