Mitsubishi Electric MELSEC iQ-R Series User Manual page 276

System information
The special relays for system information are as follows.
No. Name
SM217 Daylight saving time status
flag
*1*2
SM220 CPU No.1 preparation
completed
*1*2
SM221 CPU No.2 preparation
completed
*1*2
SM222 CPU No.3 preparation
completed
*1*2
SM223 CPU No.4 preparation
completed
SM230 CPU No.1 error flag
SM231 CPU No.2 error flag
SM232 CPU No.3 error flag
SM233 CPU No.4 error flag
*2
SM240 CPU No.1 reset flag
*2
SM241 CPU No.2 reset flag
*2
SM242 CPU No.3 reset flag
APPX
274
Appendix 4 Special Relay List
Description Details
OFF: Not during daylight This relay turns ON when the time setting is in the
saving time daylight saving time by using daylight saving time
ON: During daylight function.
saving time This relay turns OFF when the time setting is not in the
daylight saving time.
OFF: CPU No.1 This relay turns ON when the access from another CPU
preparation not module to the CPU No.1 is enabled after turning the
completed power ON or resetting the module.
ON: CPU No.1
preparation completed
OFF: CPU No.2 This relay turns ON when the access from another CPU
preparation not module to the CPU No.2 is enabled after turning the
completed power ON or resetting the module.
ON: CPU No.2
preparation completed
OFF: CPU No.3 This relay turns ON when the access from another CPU
preparation not module to the CPU No.3 is enabled after turning the
completed power ON or resetting the module.
ON: CPU No.3
preparation completed
OFF: CPU No.4 This relay turns ON when the access from another CPU
preparation not module to the CPU No.4 is enabled after turning the
completed power ON or resetting the module.
ON: CPU No.4
preparation completed
OFF: CPU No.1 normal • This relay turns OFF when the CPU No.1 is normal
ON: CPU No.1 stop error (including a continuation error status).
state • This relay turns ON when the CPU No.1 is in stop error
state.
OFF: CPU No.2 normal • This relay turns OFF when the CPU No.2 is normal
ON: CPU No.2 stop error (including a continuation error status).
state • This relay turns ON when the CPU No.2 is in stop error
state.
OFF: CPU No.3 normal • This relay turns OFF when the CPU No.3 is normal
ON: CPU No.3 stop error (including a continuation error status).
state • This relay turns ON when the CPU No.3 is in stop error
state.
OFF: CPU No.4 normal • This relay turns OFF when the CPU No.4 is normal
ON: CPU No.4 stop error (including a continuation error status).
state • This relay turns ON when the CPU No.4 is in stop error
state.
OFF: CPU No.1 not being • This relay turns OFF when the CPU No.1 is not being
reset reset.
ON: CPU No.1 being • This relay turns ON while the CPU No.1 is being reset
reset (including the case when the CPU module is removed
from the base unit). Other CPUs also will be in the reset
state.
OFF: CPU No.2 not being • This relay turns OFF when the CPU No.2 is not being
reset reset.
ON: CPU No.2 being • This relay turns ON while the CPU No.2 is being reset
reset (including the case when the CPU module is removed
from the base unit). Errors occur in the other CPU
modules.
OFF: CPU No.3 not being • This relay turns OFF when the CPU No.3 is not being
reset reset.
ON: CPU No.3 being • This relay turns ON while the CPU No.3 is being reset
reset (including the case when the CPU module is removed
from the base unit). Errors occur in the other CPU
modules.
Set by (when to set)
S (status change)
S (status change)
*3
S (status change)
*3
S (status change)
*3
S (status change)
*3
S (status change)
S (status change)
S (status change)
S (status change)
S (status change)
S (status change)
S (status change)