Chapter 14 Redundant System Instructions; System Switching - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

14
REDUNDANT SYSTEM INSTRUCTIONS
14.1

System Switching

SP.CONTSW
RnPCPU
RnCPU RnENCPU
(Process)
This instruction switches the systems (control system and standby system) during END processing of the scan where the
instruction is executed.
Ladder
(s)
FBD/LD
EN ENO
s d
■Execution condition
Instruction
SP.CONTSW
Setting data
■Description, range, data type
Operand Description
(s) Instruction ID number:
A value used to identify a system switching request
(d) Error completion device:
The device turns on when the system switching operation
failed.
EN Execution condition
ENO Execution result
■Applicable devices
Operand Bit
X, Y, M, L,
SM, F, B, SB,
FX, FY
(s) 

(d)
14 REDUNDANT SYSTEM INSTRUCTIONS
1440
14.1 System Switching
RnPCPU RnSFCPU RnSFCPU
(Redundant) (Standard) (Safety)
(d)
Execution condition
Word
J\ T, ST, C, D, W,
SD, SW, FD,
R, ZR, RD
 
 
ST
ENO:=SP_CONTSW(EN,s,d);
Range
-32768 to 32767



Double word
U\G, J\, Z LT, LST,
U3E\(H)G LC
  
  
Data type Data type (label)
16-bit signed binary ANY16
Bit ANY_BOOL
Bit BOOL
Bit BOOL
Indirect Constant
specification
LZ K, H
  
  
Others
E $
  
  