Omega Vehicle Security OMP-MODL manual Counter Input Icon Digital I/O with MLIM-2, 11-25

11.. . APPENDIX A: MASTER ICON REFERENCE

COUNTER INPUT ICON (DIGITAL I/O WITH MLIM-2)

FUNCTION:

Event / Counter / Frequency input and Digital output functions are all provided with the MLIM-2. With the MLIM-2 installed in a OMP-MODL, these respective function icons become available for use in Program Nets.

The same dialog is used to configure the four input channels for Event, Frequency, and Counter functions.

As a COUNTER input, the MLIM-2 channel accumulates counts from a User connected hardware signal input, then outputs the count to the net when it receives an Update command. When the count is output, the counter is automatically set back to 0 and counting resumes.

The MLIM-2 Counter can count pulses received at input rates up to apx 20 Khz. However, at higher frequencies, the net must be configured to read the counter before it overflows or the counter will overflow and return to 0 and continue incrementing.

INPUTS:

Hardware: No signal input shown on Net for Program Net connections. The MLIM-2 Counter function increments its count on received rising or falling edges of the input signal.

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 (from a connected Sample Rate Clock ) should be received before the icon counts to 16,777,216 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

USING THE OMP-MODL 11-25