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APP - 3
A
PPENDICES
Table 1.1 Special relay list (Continued)
No. Name Meaning Details
Set by
(When set)
Remark
SM243 No.4 CPU resetting
OFF : CPU No.4 reset cancel
ON : CPU No.4 resetting
• Goes OFF when reset of the CPU No.4 is cancelled.
SM244 No.1 CPU error
OFF : CPU No.1 normal
ON : CPU No.1 during stop
error
• Goes OFF when the CPU No.1 is normal. (Including a
continuation error)
• Comes ON when the CPU No.1 is during stop error.
(Note-2)
SM245 No.2 CPU error
OFF : CPU No.2 normal
ON : CPU No.2 during stop
error
• Goes OFF when the CPU No.2 is normal. (Including a
continuation error)
• Comes ON when the CPU No.2 is during stop error.
(Note-2)
SM246 No.3 CPU error
OFF : CPU No.3 normal
ON : CPU No.4 during stop
error
• Goes OFF when the CPU No.3 is normal. (Including a
continuation error)
• Comes ON when the CPU No.3 is during stop error.
(Note-2)
SM247 No.4 CPU error
OFF : CPU No.4 normal
ON : CPU No.4 during stop
error
• Goes OFF when the CPU No.4 is normal. (Including a
continuation error)
• Comes ON when the CPU No.4 is during stop error.
(Note-2)
S (Change status)
SM400 Always ON
ON
OFF
• Normally is ON.
SM401 Always OFF
ON
OFF
• Normally is OFF.
S (Main processing)
SM500
PCPU READY
complete
ON : PCPU READY
completion
OFF : PCPU READY
incompletion
• When the PLC ready flag (M2000) turn OFF to ON, the
fixed parameters, servo parameters and limit switch output
data, etc., are checked, and if no error is detected, this flag
turns ON.
• Turn OFF with PLC ready flag (M2000) OFF.
SM501 Test mode ON
ON : TEST mode ON
OFF : Except TEST mode
• Judge whether TEST mode ON or not using MT Developer.
• If the TEST mode is not established by TEST mode request
using MT Developer, the TEST mode request error flag
(SM510) turns ON.
S (Request)
SM502
External forced stop
input
ON : Forced stop OFF
OFF : Forced stop ON
• Confirm forced stop ON/OFF. S (Operation cycle)
SM503
Digital oscilloscope
executing
ON : Digital oscilloscope is
stop
OFF : Digital oscilloscope is
executing
• Confirm the execution of digital oscilloscope using MT
Developer.
S (Change status)
SM510
TEST mode request
error
ON : Abnormal
OFF : Normal
• Turn ON if the TEST mode is not established by TEST mode
request using MT Developer.
• When this relay is ON, the error content is stored in the
TEST mode request error register (SD510, SD511).
SM512
Motion CPU WDT
error
ON : Abnormal
OFF : Normal
• Turn ON when a "watchdog timer error" is detected by the
Motion CPU self-diagnosis function.
When the Motion CPU detects a WDT error, it executes an
immediate stop without deceleration of the operating axes.
• The error cause is stored in the "Motion CPU WDT error
cause (SD512)".
SM513
Manual pulse
generator axis setting
error
ON : At least one D714 to
D719 setting is
abnormal.
OFF : All D714 to D719
settings are normal.
• Judge whether normal/abnormal of the register for manual
pulse generator axis setting register (D714 to D719).
• When this relay is ON, the error content is stored in the
manual pulse generator axis setting error register (SD513
to SD515).
SM516
Servo program
setting error
ON : Abnormal
OFF : Normal
• Judge whether normal/abnormal of the positioning data of
servo program(K) specified with the Motion SFC program,
and if error is detected this flag turns ON.
• The content of a servo program setting error is stored at
SD516, SD517.
SM526
Over heat warning
latch
OFF : Normal
ON : Abnormal
• Turn ON when the temperature of Motion CPU module
becomes specified value 85[°C] (185[°F]) or more.
Remains ON even if normal status is restored.
SM527 Over heat warning
OFF : Normal
ON : Abnormal
• Turn ON when the temperature of Motion CPU module
becomes specified value 85[°C] (185[°F]) or more.
Turn OFF when the temperature of Motion CPU module
returns to normal.
S (Occur an error)