Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 569

• The following table lists the data sizes of individual types of function devices.
Function device
FX, FY
FD
*3 An error does not occur even if the device number specified by (s1) to (s5) is not a multiple of 16 in bit device digit specification mode.
*4 The upper two words of FD are 0.
Ex.
Content of specified device
X0
(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.)
• The FCALL(P) instruction can use (s1) to (s5).
• Up to 16 FCALL(P) instructions can be nested. Note that the 16-level nesting is the total of the CALL(P), FCALL(P),
ECALL(P), EFCALL(P), and XCALL instructions.
CALL P0
P0
FCALL P0
CALL
FCALL
FEND RET
END
Precautions
• An FBD/LD program cannot be created as a subroutine program.
• FBD/LD does not support the execution of a subroutine program with an argument.
Operation error
Error code Description
(SD0)
2820H The device specified in an argument from (s1) to (s5) cannot be secured for the data size.
3360H More than 16 FCALL(P) instructions are nested. (The 17th instruction is executed.)
3380H The subroutine program corresponding to the pointer specified by the FCALL(P) instruction does not exist.
3381H After execution of the FCALL(P) instruction, the END, FEND, GOEND, or STOP instruction is executed before the RET instruction.
3382H The RET instruction is executed before the FCALL(P) instruction.
Device
Bit device
When a bit-specified word device is used
When the bit device digit is specified
Word device
FCALL P0 M0
(1)
P10
P10 CALL P20
P10 FCALL P20
RET
Data size
1 point
1 bit
*3
4 words
4 words
D0 D30
(2) (3)
P20
RET
7 APPLICATION INSTRUCTIONS
7.4 Structure Creation Instructions
*4
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