Mitsubishi Electric MELSEC iQ-R Series - Chapter 13 Sfc Program Instructions; Checking the Status of a Step; SFC Control Instructions

13 SFC PROGRAM INSTRUCTIONS
13.1 SFC Control Instructions
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13 SFC PROGRAM INSTRUCTIONS
This chapter describes the instructions used in SFC programs. For details on SFC programs, refer to the
following.
 MELSEC iQ-R Programming Manual (Program Design)
13.1 SFC Control Instructions
Checking the status of a step
LD, LDI, AND, ANI, OR, ORI [S/BL\S]
• LD: Normally open contact, LDI: Normally closed contact
These instructions output the status (active or inactive) of the specified step as the operation result.
• AND: Normally open contact series connection, ANI: Normally closed contact series connection
These instructions perform an AND operation between the status (active or inactive) of the specified step and the previous
operation result(s), and output the operation result.
• OR: Single normally open contact parallel connection, ORI: Single normally closed contact parallel connection
These instructions perform an OR operation between the status (active or inactive) of the specified step and the previous
operation result(s), and output the operation result.
• The RnCPU and RnENCPU with firmware version "12" or later support these instructions. (Use an engineering tool with version "1.015R" or later.)
• The RnPCPU (process) with firmware version "03" or later supports these instructions. (Use an engineering tool with version "1.020W" or later.)
Ladder ST
Not supported
FBD/LD
Not supported
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant) (Process)
(s)
(s)
(s)
(s)
(s)
(s)
LD
LDI
AND
ANI
OR
ORI