Omega Vehicle Security OMP-MODL manual Counter Input Icon Gpdi, 11-21

11.. . APPENDIX A: MASTER ICON REFERENCE

COUNTER INPUT ICON (GPDI)

FUNCTION:

The GPDI (General Purpose Digital Input) is a hardware digital input for Event and Counter applications and is incorporated into every OMP-MODL System Base.

As a COUNTER input, it accumulates counts from a User connected hardware signal input, then outputs the count when it receives an Update command. When the count is output, the counter is automatically set back to 0 and counting resumes.

The GPDI Counter (in contrast to the MLIM-2 Counter) is very fast and can count pulses received at input rates up to 10 KHZ. However, when using the GPDI Counter with high speed inputs, it is imperative that the Counter receive an Update command before it counts up to 65,535 or a counter roll-over condition will occur and count data will be lost.

INPUTS:

Hardware: No signal input shown on Net for Program Net connections.

Update: The accumulated count is output every time an Update command is received on the Update input. To preclude the loss of data, this Update command should be received before the icon counts to 65,535 or the counter will roll-over to 0 and continue counting, resulting in lost counts.

Enable: Processing of the icon is allowed when Enable pin is unconnected or connected and the Enable signal is TRUE.

OUTPUTS:

Output Signal: Data type signal (ie Count totals)

ICON CONFIGURATION DIALOG BOX:

CONFIGURATION OPTIONS:

Icon Name: Specify the name for the channel. This name will show directly under the icon within the Program Net. If no name is User provided, the Backplane Port (1 to 6) and Channel (A to D) where the actual Interface Module channel is installed will be used for the name.

Output Name: Specify a name for the Output signal from this icon. This Output Name will be referenced by other icons downstream in the Program Net.

Event / Counter Select COUNTER for the Counter function.

USING THE OMP-MODL 11-21