Mitsubishi Electric M800VW Series Programming Manual page 58

M800V/M80V Series PLC Programming Manual (1/2)
4 Explanation of Devices
4.4 Detailed Explanation of Devices
Device Name
0.1-second clock
SM410
0.2-second clock
SM411
1-second clock
SM412
2-second clock
SM413
2n-second clock
SM414
(*1) Processing cycle of the high-speed ladder (sequence program) depends on the machine type.
Special register
Device Name
PLC error No.
SD0
Time of PLC error occurrence Time of occurrence (Year,
SD1
SD2
SD3
PLC operating status
SD203
PLC error character string
SD220
SD221
:
SD226
SD227
Operation
 ON/OFF is repeated by the specified second.
0.05s
 Starts from OFF when the power is turned ON.
0.05s
 The clock operation is continued even in
STOP.
0.1s
 Note that the ON-OFF status changes when
0.1s
the designated time has elapsed during the
execution of the medium speed ladder.
0.5s
0.5s
1s
1s
 ON/OFF is repeated according to the second
n s
specified with SD414.
n s
 Starts from OFF when the power is turned ON.
 The clock operation is continued even in
STOP.
 If SD414 is 0 or smaller value, operates at
n=30.
 Note that the ON-OFF status changes when
the designated time has elapsed during the
execution of the medium speed ladder.
Operation
PLC error No.  Error No. is stored when PLC alarm (illegal
PLC) occurs.
 0 is set when normal. The error No. is cleared
to 0 when executing PLC RUN next time. (*1)
 Year (last 2 digits) and moth when SD0 data
month) was updated is stored as the BCD 2-digit
code.
 Upper 8 bits (B15-B8): Year (0-99) Lower 8
bits (B7-B0): Month (1-12)
Time of occurrence (Day,  The day and hour when SD0 data was updat-
hour) ed is stored as BCD 2-digit code.
 Upper 8 bits (B15-B8): Day of month (1-31)
Lower 8 bits (B7-B0): Hour (0-23)
Time of occurrence (Minute,  The minute and second when SD0 data was
second) updated is stored as BCD 2-digit code.
 Upper 8 bits (B15-B8): Minute (0-59) Lower 8
bits (B7-B0): Second (0-59)
PLC operating status Operating status of PLC is stored.
During RUN: 0, During STOP: 2
Character string (15th/16th  A message character string that is equivalent
character) to an error No. is stored when PLC alarm (ille-
gal PLC) occurs.
Character string (13th/14th
(Diagnosis message displayed on the PLC di-
character)
agnosis screen.)
:
 0 is set when normal. The message character
Character string (3rd/4th
string is cleared to 0 when executing PLC
character)
RUN next time. (*1)
Character string (1st/2nd
character)
37
Setting side
Details
(Set time)
System side
(At high
speed ladder
processing)
(*1)
System side
(At high
speed ladder
processing)
(*1)
Setting side
Details
(Set time)
System side
(Error)
System side
(Error)
System side
(Device read)
System side
(State
change)
IB-1501667-B