Mitsubishi Electric melsec q00ujcpu User Manual page 541

(16) For redundant systems (Other system CPU information
SD1600 to SD1659 is only valid during the back up mode for redundant systems, and
refresh cannot be done when in the separate mode.
SD1651 to SD1699 are valid in either the backup mode or separate mode.
When a stand-alone system SD1600 to SD1699 are all 0.
Number Name Meaning
System error System error
SD1600
information information
System
System switching
SD1601 switching
results
results
System
System switching
switching
dedicated
SD1602 dedicated
instruction
instruction
parameter
parameter
Other system Diagnostic error
SD1610
diagnostic error code
SD1611 Other system
diagnostic error Diagnostic error
SD1612
occurrence occurrence time
SD1613
time
Other system
error Error information
SD1614
information category code
category
SD1615 Other system
Error common
to error common
information
SD1625 information
SD1626 Other system
Error individual
to error individual
information
SD1636 information
*2: Shows the special register (SD
12 - 75
Table12.35 Special register
Explanation
• If an error is detected by the error check for redundant system, the
corresponding bit shown below turns ON. That bit turns OFF when the
error is cleared after that.
b15 b2
Fixed to 0
SD1600
• If any of b0, b1, b2 and b15 is ON, the other bits are all OFF.
• In the debug mode, b0, b1, b2 and b15 are all OFF.
Stores the reasons for system switching.
• Stores the reasons for system switching into SD1601 of both systems
when system switching occarred.
• Initialized to 0 at power OFF to ON/reset to unreset.
• The following shows values stored into this register.
0: Initial value (System switching has not occurred)
1: Power-OFF, Reset, H/W failure, WDT error,(*)
2: CPU stop error (except WDT)
3: System switching request by network module
16: System switching dedicated instruction
17: System switching request from GX Developer
*: When the system is switched by the power OFF/reset of the control
system, "1" is not stored into SD1601 of the new standby system.
• Stores the parameters for system switching dedicated instruction
SP.CONTSW.
(The parameters (SD1602) for SP.CONTSW are stored in both systems
A&B)
• SD1602 is only valid when "16" is stored in SD1601.
• This SD1602 is updated once system switch instruction SP.CONTSW is
activated.
• The error value sorted in BIN code.
• Stores SD0 of the other system CPU module
• Stores the date and time when diagnostics error occurred corresponding
to error code stored in SD1610.
• Data format is the same as SD1 to SD3.
• Also, stores the value to SD1 to SD3.
• Stores the category code corresponding to the error comment
information/individual information code.
• Data format is the same as SD4.
• Also, stores the value to SD4.
• Stores the common information corresponding to the error code stored
in this system CPU.
• Data composition is the same as SD5 to SD15.
• Also, stores the value to SD5 to SD15.
• Stores the individual information corresponding to the error code stored
in this system CPU.
• Data composition is the same as SD16 to SD26.
• Also, stores the value to SD16 to SD26.
) for the host system CPU module.
*1
Each bit
b1 b0
0: OFF
1: ON
Tracking cable is not
connected or damaged
Power-OFF, reset,
watchdog timer error or
hardware failure occurred
in other system
Other system stop error
(except watchdog timer
error)
Bit turns on when failing to
connect with other system.
The following causes are
shown below:
Tracking H/W failure
Host system WDT
error
Cannot recognize
other system therefore
causing error
)
Corres-
ponding
Set by Corresponding
(When Set) ACPU
SD *2
S(Every END)
–
S(when system
is switched)
S(when system
is switched)
S(Every END) SD0
SD1 to
S(Every END)
SD3
S(Every END) SD4
SD5 to
S(Every END)
SD15
SD16 to
S(Every END)
SD26
CPU
QnPRH