Rockwell Automation 1756-HSC ControlLogix High Speed Counter Module User Manual
Page 67
Rockwell Automation Publication 1756-UM007C-EN-P - November 2011
Configure the 1756-HSC Module
67
Storage Mode
Choose how the pulse count will be
stored (with the mode selected in the
above field) if required for an
accumulated count. These are the
values:
• No Store Mode (default)
• Store and Continue Mode
• Store, Wait, and Resume Mode
• Store and Reset, Wait, and Start
Mode
• Store and Reset, and Start Mode
See
details.
Rollover
Defaults to zero (0), which is the
equivalent to a full count range
(16,777,214). When the accumulated
count value in the Present Value tag
reaches the rollover value, it resets to
zero (0) and begins counting again.
Range is 0…16,777,214.
This configuration setting can be
overridden by a value in the Output tag
for the HSC Data-extended format only.
See
for details.
Preset
Box defaults to zero (0) if a Preset
command is issued. The 1756-HSC
module’s Present Value tag will be set to
the present value.
Range is 0…Rollover value.
This configuration setting can be
overridden by a value in the Output tag
for the HSC Data-extended format only.
See
Scaler
Defaults to zero (0).
For Frequency mode, the Scaler
determines the amount of time in
milliseconds the 1756-HSC module
counts incoming pulses. Range 0…2000
ms in 10 ms increments. A value of zero
(0) is equivalent to 1000 ms.
For Period Rate/Continuous Rate modes,
pulses will be used to count internal
4 MHz pulses. Allowable values are
0, 1, 2, 4, 8, 16, 32, 64, 128, 256.
A value of zero is equivalent to 1. Valid
with the HSC Data-extended
Comm Format only.
Field
Description