
2.PMC SPECIFICATIONS B-63983EN/01
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2.3 PMC PARAMETERS
The term "PMC parameter" refers to any of the timer, counter, keep
relay parameters, and data table. PMC parameters are held in
nonvolatile memory, whose contents are not lost even when the power
is turned off.
(1) Timer
This parameter specifies a timer value.
It is possible to set and display the timer value on the TIMER
screen.
The sequence program can read and write the timer setting.
(2) Counter
This parameter is used for a counter preset value and cumulative
value. It is possible to set and display these values on the
COUNTER screen. Sequence program instructions can also read
and write these settings. See Subsection 2.2.8 for details of the
counter addresses.
Counter data is two bytes in ether BCD or binary form. Higher-
order bits are held at higher addresses. Whether the counter
address is BCD or binary is determined according to the
corresponding PMC system parameter.
The default setting is binary form.
(Example) If the counter addresses of the PMC are C0 and C1,
and the preset value is 1578
BCD format (1578)
Binary format (1578)