Mitsubishi MELSEC L Series User Manual page 276

Number Name
Control system
SM1515
judgment flag
Standby system
SM1516
judgment flag
CPU module
SM1517
startup status
Standby system to
control system
SM1518
switching status
flag
Previous Control
SM1519 System
Identification Flag
SM1520
SM1521
SM1522
SM1523
SM1524
SM1525
SM1526
SM1527
SM1528
SM1529
SM1530
SM1531
SM1532
SM1533
SM1534
Data tracking
SM1535
transfer trigger
SM1536
specification
SM1537
SM1538
SM1539
SM1540
SM1541
SM1542
SM1543
SM1544
SM1545
SM1546
SM1547
SM1548
SM1549
SM1550
SM1551
274
Meaning
• Indicates operation system status.
• The flag status does not change even if the tracking cable is disconnected.
Control Standby
system system
SM1515 ON OFF
SM1516 OFF ON
OFF : Power supply on Turns on when the CPU module is started up by
startup the system switching (switching from the standby
ON : Operation system to the control system). Remains OFF when
system switch the standby system is switched to the control
start up system by a power-ON startup.
• This relay turns on during one scan after the
standby system was switched to the control
system.
ON
1 scan
• This relay can be used only in a scan execution
OFF
type program.
When the previous control system is System B,
this relay turns on during one scan in System A,
ON
1 scan
following the RUN state after both Systems A and
OFF
B were simultaneously turned on or were reset.
SM1520
SM1521
SM1522
SM1523
SM1524
SM1525
SM1526
SM1527
SM1528
SM1529
SM1530
SM1531
SM1532
SM1533
SM1534
SM1535
OFF : No trigger
ON : Trigger
SM1536
SM1537
SM1538
SM1539
SM1540
SM1541
SM1542
SM1543
SM1544
SM1545
SM1546
SM1547
SM1548
SM1549
SM1550
SM1551
Explanation
If TRK. CABLE ERR.
(error code: 6210) occurred (Unknown)
OFF
OFF
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8 • When data is
transferred based
Block 9
on the tracking
Block 10
setting of the
Redundant
Block 11
parameter dialog
Block 12
box, the target
Block 13
block is specified
as trigger.
Block 14
• When "Do auto
Block 15
forward Tracking
Block 16
block No.1" is
selected for the
Block 17
tracking setting,
Block 18
SM1520 is turned
Block 19
on by the system at
power-on or when
Block 20
the system is
Block 21
switched from
Block 22
STOP to RUN.In
other cases,
Block 23
SM1520 to
Block 24
SM1583 are turned
Block 25
on by the user.
Block 26
Block 27
Block 28
Block 29
Block 30
Block 31
Block 32
Corre-
Set by sponding
sponding
(When Set) ACPU
M9
S (Status
change)
S (Status
change)
S (Every END
processing)
New
S (initial)/U
Corre-
CPU
QnPRH