Rockwell Automation 1756-HSC ControlLogix High Speed Counter Module - Manual (Page 24)

Rockwell Automation Publication 1756-UM007C-EN-P - November 2011
24 Counter Modes
Store and Continue Mode
In the Store and Continue mode, the module:
• reads the Present Value and places it into the Stored Value on the
leading edge of Input Z.
• continues to accumulate the Present Value based on presets and
incoming pulses.
• retains the Stored Value until it is overwritten by new data from the next
leading edge of a pulse on Input Z.
Store, Wait, and Resume
In the Store, Wait and Resume mode, the module:
• reads the Present Value and places it into the Stored Value on the
leading edge of Input Z.
• stops accumulating the count in the Present Value as long as the
Z-input is high.
• resumes accumulating the count in the Present Value when the
Z-input goes low.
• retains the Stored Value until it is overwritten by new data from the next
leading edge of a pulse on Input Z.
...10
Stored Value Tag
in Logix Controller
Present Value Tag
in Logix Controller
Z-Input
44900
11 12 13 14 15 16 17 18 19 20
... 8 8 13 13 13 13 13 18 18 18
Incoming Pulses 10 11 12 13 14 15 16 17 18 19 20
44901
Present Value Tag
in Logix Controller
Stored Value Tag
in Logix Controller
Z-Input
10
...
11
11
11 11
11 11
12 13 14 14 14 15 16
11 11 14 14 14 14 14
Incoming Pulses 10 11 12 13 14 15 16 17 18 19 20