semaphore TBOX LT2-530 Series, User Manual, Page: 133 / 197

Version : 1.09 133
14.2. The chronologies
14.2.1. Digital chronologies
Example of an entry in Digital chronology: Recording the starting and stopping of ‘VALVE1’.
Edges:
Recording on positive and (or) negative edge.
Handling:

Enabled: always recorded.

Disabled: never recorded.

PowerF: recording disabled in case of ‘mains’ power failure.

DisCRD: recording disabled when the system variable ‘DisCRD’ is at 1.
14.2.2. Analog chronologies
Example of an entry in Analog chronology: Recording of a variation of 10 mbar of ‘PRESSURE’.
Variation:
Recording in case of variation (higher or lower) in comparison with the previous recording.
The weight of the value corresponds to the scaling defined in the Tag definition (see
chapter 9.1.1: Analog I/Os).
Handling:

Enabled: always recorded.

Disabled: never recorded.

PowerF: recording disabled in case of ‘main’ power failure.

DisCRA: recording disabled when the system variable ‘DisCRA’ is at 1.