Configuration Tab - 1756-REG

Use this tab to configure 1756-REG module.
Use this tab to:
  • Enable CST capture for each input point
  • Enable chatter detection
  • Set an input filter time
  • Enable CST latching
    TIP:
    The module’s configuration information is stored in the controller and the controller configures the module.
Parameters
Enable CST Capture
Select the boxes for each input point for which you want to capture Off -> On and On -> Off events.
When a box is selected, the specified event is captured for the corresponding input point.
Chatter Detection
Use this to detect a chattering signal from a device connected to an input point and ignore the data. To configure the Chatter Detection for an input, you must define an acceptable number of input transitions within a specific time period.
  • No. of Events - Enter the number of input transitions.
  • Time (ms) - Enter the specific time period in milliseconds.
If the No. of Events meets the specified Time, the module considers the input point in chatter, the input device defective, and ignores the last transition and all subsequent transitions while still chattering. The corresponding fault bit the input is set.
If the No. of Events is less than the specified Time, the input will not go into chatter and timestamps are produced for all transitions.
Input Filter Time
Select a value to set these two values for filter times for each input point group:
  • OFF to ON - rising edge filtering for all 16 input channels
  • ON to OFF - falling edge filtering for all 16 input channels
Input Filter Time
Select a value to set these two values for filter times for each input point group:
  • OFF to ON - rising edge filtering for all 16 input channels
  • ON to OFF - falling edge filtering for all 16 input channels
Latch CST
Select this box to latch all CST transitions so that an event is not overwritten without being acknowledged. For instance, in 16 channel mode, in a sequence of events from OFF to ON to OFF, the first OFF and ON transitions are recorded, while the final OFF transition is ignored. All subsequent transitions on that point will also be ignored until acknowledged or reset.
If this box is cleared, then the second OFF transition in the example above would overwrite the first OFF transition immediately, even if the controller has not yet extracted the data.
In Queueing mode, events are not erased from the FIFO until read.
Disable Master Gate Input
Select this box if you want to turn off master gate operation and allow event detection at any time. If this box is left unchecked (default), events are only detected if Master Gate (Point 0) is TRUE, based on setting Master Gate: Active Low.
Enable Master Gate Input as Active Low
Select this box if you want to allow events to be detected on other inputs when the Gate is Low (True) or High (False).
Reset All CST
Select this button to send an unconnected message to the module to clear all current recorded events from the input data upon receipt.
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