Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 108

Instructions that cannot be used
Some instructions cannot be used in actions. The following table lists the instructions that cannot be used.
Classification
Master control instruction
Termination instruction
Program branch instruction
Program execution control instruction
Structure creation instruction
Creating a dummy transition condition
*1 This instruction can be used in a function or a function block in the action.
Create a contact to be input condition of each instruction in the ladder of detailed expression.
■ Restrictions
The following table lists the restrictions on individual programming languages used to create an action.
Language
Ladder diagram Detailed expression
MELSAP-L (instruction
format)
Structured text language
FBD/LD
8 SFC PROGRAM
106
8.2 Structure
Instruction symbol
*1
MC
*1
MCR
FEND
END
*1
CJ
*1
SCJ
*1
JMP
GOEND
IRET
*1
BREAK
RET
TRAN
Description
A pointer and an interrupt pointer cannot be input in the pointer input area.
■Functions/function blocks that cannot be used
• Function/function block that includes an instruction that cannot be used in an action
• Function/function block that includes a pointer
• A macro type function block for which "Use MC/MCR in EN Control" is set to "Yes" and "Use EN/ENO" is set
to "No"
The instructions corresponding to contacts (including comparison operation instructions such as LD<), the
NOP, MPS, MRD, and MPP instructions, pointers, interrupt pointers, functions, and function blocks cannot be
described.
Page 59 STRUCTURED TEXT LANGUAGE
Page 75 FBD/LD