EXCEL 50/100/500/600/800 | ATTRIBUTES |
Write Protection
The attribute "Write Protection" (XBS, only) prevents data from being overwritten. The default setting of the attribute is 0 (="No"). If the datapoint should be protected, then "No" must be overwritten with a value between 0 and 100.
0 = No write protection
100 = Highest priority required
To change this attribute, the operator must log in at an operator level that corresponds to the current write protection attribute (see Table 16).
Table 16. Access values for operator levels
| operator level XBS |
| access for write protection values | |
| 1 |
|
| no access |
| 2 |
|
| no access |
| 3 |
|
| 0 to 60 |
|
|
|
|
|
| 4 |
|
| 0 to 80 |
|
|
|
|
|
| 5 |
|
| 0 to 100 |
| The operator's authority level is compared to the write protection status of the | |||
| datapoint to establish whether or not any modification can be made. | |||
| As soon as the operator receives permission, he can alter the attribute of secured | |||
| datapoints. The operator can also set the write protection to a higher value or | |||
| cancel write protection completely. |
| ||
Example: | A datapoint with a write protection value of 61 can be altered only at operator level | |||
| 4 or 5. |
|
|
|
| The write protection can be reduced to 0 from level 4 as well as level 5. The | |||
| datapoints can be altered through level 3. A detailed high priority can then be given | |||
| through the write protection. |
| ||
| NOTE: | When online, the XI581 (not with XCL5010, Excel 100C), XI582, and XL- | ||
|
| Online operator interfaces and the | ||
|
| attribute "Write Protection". You can still change any datapoint via the | ||
|
| user interface, even if the datapoint is | ||
37 |
