Mitsubishi Electric MELSEC iQ-R Series User Manual page 649

No. Name
SM61 I/O module verification
error
SM62 Annunciator
SM80 Detailed information 1:
Flag in use
SM112 Detailed information 2:
Flag in use
SM150 Power-off/power supply
voltage drop detection
SM151 Power supply module
failure detection
Data stored Details
Off: Normal • This relay switches to on when the state of the I/O module
On: Error is different from one registered during power-on, and the
ON state is maintained even after later recovering to the
normal state.
• I/O module verification is also done for modules on the
remote I/O station.
• In a redundant system with redundant extension base unit,
this relay is set as follows:
Off: Not detected • This relay switches to on when at least one annunciator is
On: Detected turned on.
• This relay returns to off when all the annunciators are
turned off.
Off: Not used This relay switches to on if the detailed information n exists
On: In use when SM0 switched to on.
Off: Power-on/normal power • This relay turns on when one or more of the power supply
supply voltage modules whose power has been shut off or power supply
On: Power-off/voltage drop voltage has dropped (not including a momentary power
detected/power supply failure), or one or more of empty slots for the power supply
module not mounted module are detected on the redundant power supply base
unit or a redundant extension base unit.
• This relay turns on if causes to turn on any bits of SD150
have been occurred.
• This relay turns off if causes to turn on any bits of SD150
have been removed.
• In a multiple CPU system, the flags are stored only to the
CPU No.1.
• In a redundant system with redundant extension base unit,
if power-off or power supply voltage drop is detected in a
power supply module on an extension base unit, the on/off
state is stored only in the CPU module of the control
system, but not stored in the CPU module of the standby
system.
Off: Not detected/power-off/ • This relay turns on when one or more power supply module
no power supply module failures have been detected on the redundant power supply
On: Detected base unit or a redundant extension base unit.
• This relay turns on if causes to turn on any bits of SD151
have been occurred.
• This relay turns off if causes to turn on any bits of SD151
have been removed.
• In a multiple CPU system, the flags are stored only to the
CPU No.1.
• In a redundant system with redundant extension base unit,
if a failure of a power supply module on an extension base
unit, the on/off state is stored only in the CPU module of the
control system, but not stored in the CPU module of the
standby system.
 If an I/O verification error occurs in a module on an
extension base unit, the on/off state is stored only in the
CPU module of the control system, but not stored in the
CPU module of the standby system.
 When the systems are switched, the state before system
switching is held.
 When the error is cleared, the CPU module of the
system where the error is cleared clears the value.
Appendix 4 List of Special Relay Areas
Set by (setting
timing)
S (Error)
S (Instruction
execution)
S (Status change)
S (Status change)
A
S (Status change)
APPX
647