Rockwell Automation 1756-LSC8XIB8I ControlLogix Low-speed Counter Module - Manual (Page 23)

Rockwell Automation Publication 1756-UM536A-EN-P - April 2012 23
Module Operation Chapter 2
Output Control Inputs from the counter module can affect outputs on a 1756-OB16IEF module.
The output module consumes data from these input tags on a peer module:
• Pt[x]Data—Indicates the current On/Off value of the corresponding
hardware input.
• Counter[x]InWindow0—Indicates whether the accumulated count or
frequency value of Counter[x] is within the parameters defined by the
Counter[
x].Window0On and Counter[x].Window0Off output tags. A
change in window status triggers a Change of State (COS) message to be
sent to the owner-controller or peer module.
• Counter[x]InWindow1—Indicates whether the accumulated count or
frequency value of Counter[
x] is within the parameters defined by the
Counter[
x].Window1On and Counter[x].Window1Off output tags. A
change in window status triggers a Change of State (COS) message to be
sent to the owner-controller or peer module.
You can define the output behavior on the 1756-OB16IEF module by applying
Boolean logic to the On/Off windows, inputs, and any bits from the controller.
To establish communication with an input module, the output module sends a
Listen-only connection request to the input module. Once the connection is
established, the output module can consume data directly from the input
module.
For more information about peer control, refer to the Peer I/O Control
Application Technique, publication
1756-AT016 .
IMPORTANT Either the Preset Count hardware input or the corresponding bit in the
Counter[x]PresetCount output tag can determine whether the count is preset.
The count is preset to the Counter[x].Preset value under the following
conditions:
• Counter[x].PresetTieToPt configuration tag = 0…7 (rising edge-sensitive)
or
• Counter[x]PresetCount output tag = 1 (rising edge-sensitive)