6F3B0250
6. Programming Information
Special devices and registers (S/SW)
The special devices (S) and special registers (SW) are used for special purposes. See list below.
Device/ | Name |
| Function |
register |
|
|
|
S000 |
| 0: Initialization 4: HOLD mode | |
S001 | T1/T1S operation mode | 1: HALT mode | 6: ERROR mode |
S002 |
| 2: RUN mode |
|
S003 |
| 3: |
|
S004 | CPU error (down) | ON at error state (related to SW01) | |
S005 | I/O error (down) | ON at error state (related to SW02) | |
S006 | Program error (down) | ON at error state (related to SW03) | |
S007 | EEPROM alarm (alarm) | ON when EEPROM write exceeds 100,000 times | |
S008 | ON when actual scan time is longer than the setting time | ||
| (alarm) | as |
|
S009 | - | Reserved |
|
S00A | Clock/calendar error | ON when clock/calendar data is illegal (T1S only) | |
| (alarm) |
|
|
S00B | - | Reserved |
|
S00C | - | Reserved |
|
S00D | ON when | ||
S00E | - | Reserved |
|
S00F | Retentive data invalid | ON when retentive data in RAM are invalid | |
| (alarm) |
|
|
NOTE | (1) These devices are set by the T1/T1S operating system. These devices are | ||
| |||
| read only for user. |
|
|
| (2) Devices marked as (down) are set in the ERROR mode. Therefore these | ||
| devices cannot be used in the user program. | ||
| (3) Devices marked as (alarm) are set in the normal operation mode. These | ||
| devices can be used in the user program. |
| |
Basic Hardware and Function 97
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