Mitsubishi MELSEC L Series User Manual page 324

Number Name Meaning
Cumulative
execution time
for low speed
SD544
Cumulative
execution type
execution
programs (ms
time for low
value)
speed
Cumulative
execution
execution time
type
for low speed
programs
SD545
execution type
programs
(µs value)
Execution time
for low speed
SD546 execution type
Execution
programs
time for low
(ms value)
speed
execution
Execution time
type
for low speed
programs
SD547 execution type
programs (µs
value)
Scan program
SD548 execution time
(ms value)
Scan
program
execution
Scan program
time
SD549 execution time
(µs value)
Scan
execution type
SD548 program
Scan
execution time
execution
(ms value)
type program
Scan
execution
execution type
time
SD549 program
execution time
(µs value)
Service
interval Unit/module
SD550
measuremen No.
t module
Module service
SD551 interval (ms
value)
Service
interval time
Module service
SD552 interval (µs
value)
322
Explanation
• Stores the cumulative execution time of a low-speed
execution type program. (The time is measured in increments
of 100µs.)
SD544: Stores a ms value (storage range: 0 to 65535)
SD545: Stores a µs value (storage range: 0 to 900)
• Cleared to 0 after the end of one scan of a low-speed
execution type program.
• A value in this register is cleared to "0" when the CPU module
is switched from STOP to RUN.
• Stores the execution time of a low-speed execution type
program in one scan. (The time is measured in increments of
100µs.)
SD546: Stores a ms value (storage range: 0 to 65535)
SD547: Stores a µs value (storage range: 0 to 900)
• Stored every scan.
• A value in this register is cleared to "0" when the CPU module
is switched from STOP to RUN.
• Stores the execution time of a scan program in one scan.
(The time is measured in increments of 100µs (in icrements
of 1µs for the Universal model QCPU and LCPU).)
SD548: Stores a ms value (storage range: 0 to 65535)
SD549: Stores a µs value (storage range: 0 to 900 (0 to 999
for the Universal model QCPU and LCPU)).
• Stored every scan.
• A value in this register is cleared to "0" when the CPU module
is switched from STOP to RUN.
• Stores the execution time of a scan execution type program
in one scan. (The time is measured in increments of 100µs.)
SD548: Stores a ms value (storage range: 0 to 65535)
SD549: Stores a µs value (storage range: 0 to 900)
• Stored every scan.
• A value in this register is cleared to "0" when the CPU module
is switched from STOP to RUN.
Sets I/O number for module that measures service interval.
This register stores the service interval of a module specified by
SD550 when SM551 is turned on. (The time is measured in
increments of 100µs.)
SD551: Stores a ms value (storage range: 0 to 65535)
SD552: Stores a µs value (storage range: 0 to 900)
Corre-
sponding
Set by
sponding
(When Set) ACPU
D9
S
(Every END
processing)
Q00J/Q00/
New
U
S
(Request)
Corre-
CPU
Qn(H)
QnPH
Q01
QnU
LCPU
Qn(H)
QnPH
QnPRH