Mitsubishi Electric MELSEC FX3U Programming Manual page 433

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
• If the command input is set to OFF in the middle of operation, execution is paused. (The present data
value stored in
input is set to ON again,
• After transfer is completed, the instruction execution complete flag M8029 turns ON, and the
returned to the
Command
S
2
S
1
(M8029)
• When acquiring the operation result at a constant time interval (constant scan mode)
Write a prescribed scan time (which is longer than the actual scan time) to D8039 and set M8039 to ON to
select the constant scan mode in the PLC.
For example, when "20 ms" is written to D8039 and "n" is set to 100, the
to
S D S D
1 1 2 1
2. Operation of the mode flag (M8026)
In FX /FX PLCs, the contents of
3U 3UC
the mode flag M8026.
In FX PLCs, the contents of
3G
the ON/OFF status of the mode flag M8026.
1) When M8026 is OFF
Command
S
2
S
1
(M8029)
Related devices
Device
Instruction
M8029
execution complete
*1
RAMP mode
M8026
*1. M8026 is available only in FX
to STOP.
Caution
1. When specifying a latched (battery backed) type device as
When setting PLC to the RUN mode while the command input is ON, clear
D D is held, and the number of scans stored in
1
D D is cleared, and the operation is started from
1
S D value.
1 1
D
in 20 seconds.
D D
1
+1 are same as the case "2) When M8026 is ON" below without regard to
D D
1
D
→ For the instruction execution complete flag use method, refer to Subsection 6.5.2.
Name
Turns ON when
Refer to the operation of the mode flag M8026 described above.
/FX
3U 3UC
14 Handy Instruction – FNC 60 to FNC 69
14.8 FNC 67 – RAMP / Ramp Variable Value
D D
1
+1 are changed as follows depending on the ON/OFF status of
2) When M8026 is ON
Command
S
2
S
1
(M8029)
Description
becomes equivalent to
D
PLCs, and is cleared when the PLC mode switches from RUN
D
+1 is cleared.) When the command
D S .
1 1
D D
1
D D value will change from
1
D
after "n" operation cycles.
S
2
D
1
in advance.
D D
1
11
value is
12
13
14
15
16
17
18
19
20
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