Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 585

Processing details
• The table rotation is controlled by conditions of "n2", (s), and (d) so that a product can be efficiently put on or taken off the
rotary table divided into "n1" (=10) sections as shown in the figure below. When the following conditions are specified,
forward/backward rotation and high-speed/low-speed/stop are output to (d)+3 to (d)+7.
Station No. 0
Zero point detection
X2(M2)
0
1
Station No. 1
• Provide a 2-phase switch (X0 and X1) for detecting the rotation direction (forward or backward) of the table and the switch
X2 which turns ON when the product No. 0 reaches the station No. 0. X0 to X2 are replaced with internal contacts of (d) to
(d)+2. Any head device number can be specified by X or (d).
X0
M0
X1
M1
X2
M2
• The counter (s) detects which product number is located at the station No. 0.
• Set the station No. to be called in (s)+1.
• Set the product No. to be called in (s)+2.
• Specify the number of divisions (n1) of the table, and number of low-speed sections (n2).
Precautions
• When the command input is set to ON and this instruction is executed, the result will be automatically output to (d)+3 to
(d)+7. When the command input is set to OFF, (d)+3 to (d)+7 are set to OFF accordingly.
• For example, when the rotation detection signal ((d) to (d)+2) is activated 10 times in one division, set a value multiplied by
"10" to each division, station 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.
• When the zero point detection signal (M2) turns ON while the command input is ON, the contents of the register for
counting (s) are cleared to "0". This clear operation should be executed before starting the operation.
• Up to four ROTC instructions can be used simultaneously.
Product
8
9
7
X0(M0)
Detection
Switches
X1(M1)
4
2
3
2-phase switch
(d)
A phase
Up-counting signal during forward rotation
(d)+1
B phase
(d)+2
Zero point detection switch
6
Forward
rotation
5
Rotary table
8 APPLICATION INSTRUCTION
8.15 Shortcut Control Instruction
8
583