Specifications

RN: 5-49
RS3: Software Release Notes for P1 R4.2
Changes to RS3 Manuals
Target Count
n Reset Counter
Output—
No. of pulses
PIOB
xxxx01
or
xxxx02
Pulses
With a ControlBlock linked to the PIOB, the
ControlBlock provides the target value. Anytime
that logic step m rises (turns on), the ControlBlock
output value becomes the PIOB target value.
Anytime that logic step n rises (turns on), the
PIOB count is set to zero, and PIOB flag k is set
to zero.
When the PIOB count
reaches the target
value, PIOB flag k (for
example, A.u.k) is
toggled on, and the
count is reset to zero.
When the count again
reaches the target
value, flag k is toggled
off.
ControlBlock
Continuous
Q
Discrete
Count
Target
Point T ype ⇒Pulse Input
Type ⇒Contact or Voltage
Function Type ⇒Counter
m Reset Target
Actual count=
Target count
Field signals
ControlBlock
Continuous
Q
Discrete
Figure 3.2.11. Configuring a PIOB to Count Pulse Inputs—Target Count Supplied by a ControlBlock
Description: A note was added to the description of the Source HF
field in Table 3.2.6 on page 3-2 -15.
Table 3.2.6. Pulse Input PIOB Fields to Count Pulses—Target Count Provided by ControlBlock
Field
Description Allowable Entries
Source HF
Selects the hold forward flag option for the source.
“Yes” = The hold forward flag from the source is
taken into account.
“No” = The hold forward flag from the source is
ignored.
NOTE: If the Source HF field is set to “yes” and the
Source ControlBlock HF flag is set, the PIOB counter
and load counter will ignore user flag m.
yes,no