NAiS FP1, Руководство по оборудованию

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Notes:
X1 Y0
X0
(
MC 0
) !
( MCE 0 ) !
X2
( MC 1 ) !
(
MCE 1
) !
X3 Y1
• Another master control instruction (
MC
,
MCE
)
set can be programmed between one master
control instruction set as shown on the right. This
construction is called “nesting”.
125
5-3. Description of Basic Instructions
1. When programming
DF
and
DF /
instructions in the master control instruction set:
The
DF
and
DF /
instructions remember their trigger state (ON or OFF) just before the trigger of the
MC
instruction turns OFF while the master control instruction set is in the OFF state.
Be sure to pay attention to the following when the
DF
and
DF /
instructions are programmed.
2. The
MC
instruction cannot be started directly from the bus line. Be sure to include a contact input before
the
MC
instruction in your program.
3. The program cannot be executed in the following
conditions:
- The trigger of the
MC
instruction is missing.
- There are two or more master control instruction
sets with the same number.
- The order of the
MC
and
MCE
instructions are
reversed.
• Trigger to the
DF
or
DF /
instruction between the
MC
and
MCE
instruction set is ignored while
the
MC
trigger is OFF.
• If, in the example above, output is required at
point A , place the
DF
or
DF /
instruction outside
the
MC
and
MCE
instruction set.
• If the same trigger is set for the
MC
and for the
DF
or
DF /
instruction, there will be no output.
Place the
DF
or
DF /
instruction outside the
MC
and
MCE
instruction set when output is
required.
( MCE 0 ) !
Y0
X1
X0
X1 Y0
( DF ) !
X0
( MC 0 ) !
Changes in X1 are ignored
during this interval.
A
(
MCE 0
) !
X1 R0
X0
(
MC 0
) !
R0 Y0
( DF ) !
INCORRECT
( MCE 0 ) !
X0 Y0
( DF ) !
X0
( MC 0 ) !
( MCE 0 ) !
X0 R0
X0
( MC 0 ) !
R0 Y0
( DF ) !
Y0 never
turns ON.
INCORRECT
X1 Y0
X0
( MC 0 ) !
( MCE 1 ) !
(
MC 1
) !
X2
(
MC 1
) !
X3 Y1
X4
( MCE 1 ) !
X5 Y2
MCE 0 is missing.
Duplicated use of
same MC instruction
number.
(MC1) and (MCE1)
are reversed order.