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7 APPLICATION INSTRUCTIONS
7.4 Structure Creation Instructions
Processing details
• These instructions execute the subroutine program of the pointer specified by (P). The instructions can execute the
subroutine program specified by a pointer in the same program file or the subroutine program specified by a global pointer.
• When the function device (FX, FY, or FD) is used in the subroutine program, specify the device corresponding to the
function device in (s1) to (s5). The following figure shows the data of the device areas specified by (s1) to (s5).
• The following table lists the data sizes of each function device.
*2 An error does not occur even if the device number specified by (s1) to (s5) is not a multiple of 16.
*3 The data size varies depending on the instruction used.
Ex.
Data in the specified devices
• The CALL(P) instruction can use (s1) to (s5).
• The number of function devices used in the subroutine program must be identical to the number of arguments of the
CALL(P) instruction. Also, the types of function devices and CALL(P) instruction arguments must be the same.
• Set the device numbers in the argument of the CALL(P) instruction so that they do not overlap. If they overlap, normal
operation cannot be performed.
• If the timer or counter is specified as a device in the argument of the CALL(P) instruction, only the current value is
transmitted/received.
A: Main routine program
B: Subroutine program
• Before execution of the subroutine program, bit data is transferred to FX and word data is transferred to FD.
• After execution of the subroutine program, the data in FY and FD are transferred to the corresponding devices.
• Function devices FX and FY are processed in units of bits. Function device FD is processed in units of 4 words. The size of data to be processed varies
depending on the type of the device specified by an argument. The device specified as a function device should be secured for the data size. An error occurs
if an appropriate data area cannot be secured.
Function device
Device to be used
Data size
FX, FY
Bit device
1 point
Bit-specified word device
1 bit
FD
Digit-specified bit device
4 words
Word device
4 words
(1) M0 occupied (The data is transferred to FX0.)
(2) D0 to D3 occupied (The data is transferred to FD1.)
(3) D30 to D33 occupied (The data is transferred to FD2.)
CALL (P)
END
(P)
RET
A
B
X10
FX0
P0
CALLP
P0
X0
D0
D100
D*
FD1
K100
FD2
RET
FEND
X0
CALL
P0
M0
D0
D30
(1)
(2)
(3)
Summary of Contents for MELSEC iQ-R Series
Page 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Page 34: ...32 MEMO ...
Page 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Page 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Page 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Page 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Page 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Page 2109: ......