Red Lion C48C - Manual (Page 18)

BASIC OPERATION
Single and Dual Preset Units
The C48CS and C48CD have one counter that keeps track of the input pulse
count. On each counter edge, the prescaler value is added to or subtracted from
the count value. This results in the desired reading value for the count display.
The counter has two reset action modes; Reset to Zero ( up-count modes) and
Reset to Preset (down-count modes). A reset can be a manual reset, using a
programmable user input, or it can be one of the programmable automatic reset
modes.
The counter displays the scaled number of pulses that have been entered.
When the count equals either preset 1 or 2, depending on the model, the
appropriate output activates. The count can be programmed to automatically
reset if desired.
3 Preset Batch Unit
The C48CB contains two counters that keep track of the Process Count, and
the Batch or Total Count. On each count edge, the prescaler value is added to or
subtracted from the count input value. This results in the desired reading value
for the process or total count displays. The batch count registers one count each
time the process is completed.
The process counter has two reset action modes; Reset to Zero (up-count
modes) and Reset to Preset (down-count modes). A reset can be a manual reset,
using a programmable user input, or it can be one of the programmable
automatic reset modes.
The batch counter displays the number of process cycles that have been
completed.
The total count is the total number of counts that have been received since the
total was last reset. It can be used to keep a running total of process units on a
desired per shift, per day, per week, etc. basis.
Normal Operating Mode
In the normal operating mode, the count or batch/total value is shown on the
main display. By successively pressing the
A
key, the accessible presets,
prescaler, output time values, or batch/total count can be viewed in the
secondary display.
With the exception of the batch/total count, each of the values can be
independently programmed to be viewable only, viewable and changeable, or
locked (not viewable) in the normal operating mode. On the batch models, if all
values are locked, only the batch/total count value is viewable in the secondary
display. On single or dual preset models, the display will be blank. Only from
the normal operating mode can access be gained to the Programming Menu or
Protected Value Menu.
Modifying A Secondary Display Parameter
From the Front Panel
Secondary display parameters can be modified from the normal operating
mode if the Operator Access privileges allow it.
To modify a parameter, it must be viewed in the secondary display. When the
parameter to be modified is viewed, press the
B
or
C
key. Leading zeros
appear and the least significant digit blinks. The value can now be modified as
described in Programming Numeric Data Values, page 15.
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