APPENDICES
Appendix 5 Method for Starting up the Previous Control System
App - 28
9
PROCESSING TIME
FOR REDUNDANT
SYSTEMS
APPENDICESINDEX
POINT
Create a system switching program while paying attention to the following points.
• Turn on the special relay, "Manual System Switching Enabled Flag"
(SM1592) by executing SP.CONTSW instruction.
An "OPERATION ERROR (error code: 4120)" will occur if the
SP.CONTSW instruction is executed while SM1592 is OFF.
• Set any value other than 0 as the parameter for SP.CONTSW instruction.
If the SP.CONTSW instruction is executed with the parameter set as 0,
the "OPERATION ERROR (error code: 4100)" will occur.
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