vs | plus sends a message 12 after a program change, if it is determined that the cycle time of the signal plan does not match the cycle time of the signal frame plan supplied for that program. Due to an adjustment of the supply in version 8.1, the reading of the cycle times of the signal frame plans has been changed. As a result, message 12 erroneously appeared as a false alarm.
Note: If all programs are parametrized with FTA, a message 12 will never never displayed. The problem does not exist in this case.
Note: The supply and subsequent processing of the signal frame plan cycle times are correct. Message 12 is therefore a false alarm in most cases.
In version 9.1, the issue has been fixed. In the affected versions 8.1 and 9.0, however, this correction can no more be applied. The workaround described below does not apply to version 8.1 As of version 9.1, it is no longer necessary. Nevertheless, we recommend that you consistently parametrize the numbering of the signal plans, signal frame plans, controller place location and program numbers and that the conditions of the workaround be adhered to for all parametrizations:
For version 9.0, 15 is the maximum possible program number (numbers up to 32 are allowed in versions 8.0.1 and down and version 9.1 upwards).
The signal frame plan number must be the same as the signal plan number. It is best to assign the corresponding signal plan to the signal frame plan. The cycle time is then automatically applied.
The controller place number (CP-DS) of the signal frame plan record in the SFP record definition must be equal to the program number. Ideally, it should also correspond to the signal frame plan number.
Summarized:
- Signal plan number = signal frame plan number = controller place number = program number,
- Signal plan cycle time = Signal frame plan cycle time
- Valid program numbers are 1 to 15 (versions 9.0, 8.1), or 1 to 32 (version < 8.1 or >= 9.1)