6F3B0253
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 | ||
| (alarm) | time as |
|
S009 | − | Reserved |
|
S00A | Clock/calendar error | ON when clock/calendar data is illegal | |
| (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 |
| |
| 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 79
