Mitsubishi Electric FX3G SERIES Programming Manual page 419

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Operation conditions
The conditions required to use this instruction are as shown in the example below.
Rotation detection signal: X →
1)
- Provide a 2-phase switch (X000 and X001) for detecting the rotation direction (forward or backward) of the table
and the switch X002 which turns ON when the product No. 0 reaches the port No. 0.
- Create the sequence program shown below.
X000
X001
X002
X000 to X002 are replaced with internal contacts of
An arbitrary head device number can be specified by X or
2) Specification of a register for counting:
The counter
3) Registers specifying the calling condition:
a) Set the port No. to be called in
b) Set the product No. to be called in
4) Number of divisions m1 and number of low-speed sections m2
Specify the number of divisions m1 of the table, and number of low-speed sections m2.
When the above conditions are specified, forward/backward rotation and high-speed/low-speed/stop are output to
D D +3 to D D
1 1
Cautions
1. Operations caused by the command input ON/OFF status
• When the command input is set to ON and this instruction is executed, the result will be automatically output to
D D D D
+3 to
1 1
• When the command input is set to OFF,
2. Multiple activation of the rotation detection signal (
For example, when the rotation detection signal (
multiplied by "10" to each division, port No. to be called and product No. to be called.
As a result, an intermediate value of the division number can be set to a low-speed section.
3. Zero point detection signal
When the zero point detection signal (M2) turns ON while the command input is ON, the contents of the register for
counting D S are cleared to "0".
1
This clear operation should be executed before starting the operation.
D D
1
D
M0
D
M1
D
M2
D S
1
D S
detects which number of product is located at the port No. 0.
1
D S +1.
1
D S
1
+7 specified by the head device
+7.
D D
1
D D
1
14 Handy Instruction – FNC 60 to FNC 69
14.9 FNC 68 – ROTC / Rotary Table Control
2-phase switch
A
phase
Up-counting signal during forward rotation
+1
B
phase
+2
Zero point detection switch
D D
to +2.
.
D
D S D S
+1 and +2
1 1
+2.
D D .
1
D D
+3 to +7 are set to OFF accordingly.
1
D D D D
1 1
to
D D D D
to +2) is activated 10 times in one division, set a value
1 1
+2) in one division
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