Siemens 9300, 9350, 9330 manual Meter Clock Configuration, Fine Tuning Over Condition Monitoring

9300 Series User’s GuideMeter Clock Configuration

Fine Tuning Over Condition Monitoring

If you want to fine-tune over condition monitoring, the only setup registers you should change are SusUntlON and SusUntlOFF.

SusUntlON determines how long the modules wait after an over condition is detected before reporting it. This gives the monitored value a short period to correct itself before the event is registered with the module, so that very brief over conditions are ignored. Similarly, SusUntlOFF is the amount of time a normal value must be present before the module considers normal operation to be restored. Both SusUntlON and SusUntlOFF values are entered in seconds (the default value for both is 30 seconds).

Refer to the online ION Programmer’s Reference for more information about the

Relative Setpoint module.

Meter Clock Configuration

The Clock module controls the meter’s internal clock which provides timestamps for data logged by the device. The clock needs to be configured properly to ensure that logged data has accurate timestamp information. The Clock module also receives the time synchronization signals sent to it by the workstation running ION software, updating the device’s clock when required.

The setup registers in the Clock module specify timezone and Daylight Savings

Time (DST) parameters and time synchronization functions.

Setup Register	Function		Default
TZ Offset	The timezone the device is in, relative to Greenwich Mean Time		0
DST Start	Date and time when DST begins		0
DST End	Date and time when DST ends		86,400
DST Offset	The amount of time the clock is changed when DST begins or ends		0
Time Sync Source	The communications port that receives time sync signals		COM1
Time Sync Type	The type of time sync signal (Local or Universal time)		UTC
Clock Source	Specifies the clock’s time synchronization signal source (line frequency, communications signals, or		Internal
	internal crystal)
		NOTE
		When modifying setup registers of the Clock module, use the Format option to convert between UNIX and
		conventional time. Refer to the description of the Clock module in the online ION Programmer’s
		Reference for more details.
		Refer to the technical note Time Synchronization and Timekeeping for further details
		on using the meter’s time synchronization functions.

Chapter 3 - Default Meter Functionality Page 49