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APPENDICES
(10) For redundant systems (Host system CPU information
SM1510 to SM1599 are only valid for redundant systems. All off for standalone systems.
Number
Name
SM1500 Hold mode
SM1501 Hold mode
SM1510 Operation mode
Start mode when
SM1511
power supply is on
Start mode when CPU
SM1512
is started
Operation status when
SM1513
CPU is started
Operation mode when
SM1514
CPU is switched
SM1515 Output hold mode
Operation system
SM1516
status
SM1517 CPU startup status
Tracking execution
SM1518
mode
SM1520
SM1521
SM1522
SM1523
SM1524
SM1525
SM1526
SM1527
SM1528
SM1529
SM1530
SM1531
Data tracking
SM1532
transmission link
SM1533
specification
SM1534
SM1535
SM1536
SM1537
SM1538
SM1539
SM1540
SM1541
SM1542
SM1543
SM1544
SM1545
App - 18
Meaning
OFF: No-hold
• Specifies whether or not to hold the output value when a
ON : Hold
range over occurs for the S.IN instruction range check.
OFF: No-hold
• Specifies whether or not the output value is held when a
ON : Hold
range over occurs for the S.OUT instruction range check.
OFF: Redundant
system backup
mode,
independent
• Turns on when the operating mode is redundant system
system
separate.
ON : Redundant
system
separate mode
OFF: System A fixed
mode
• Turns on when the start mode for a redundant system
ON : Previous control
when the power is turned on is the previous control system
system latch
latch mode.
mode
OFF: Initial start
• Turns on when the CPU operation mode is hot start when
ON : Hot start
the redundant system is started up.
OFF: Initial start
• Turns on when the CPU operation mode is hot start when
ON : Hot start
the redundant system is actually start up.
OFF: Initial start
• Turns on when the operation is hot start when the CPU
ON : Hot start
operation is switched for a redundant system.
OFF: Output reset
• Turns on when the output mode during a stop error is
ON : Output hold
output hold.
OFF: Control system
• Turns on when the CPU operation system status is the
ON : Standby system
standby system.
OFF: Power supply
on startup
• Turns on when the CPU is started up by the operation
ON : Operation
system switch.
system switch
• Reset using the user program.
starup
• When turned off when the tracking memory is in use during
OFF: Batch operation
END, standby is executed until execution is possible.
mode
• When turned on when the tracking memory is being used-
ON : Carryover mode
during END, this is repeatedly executed until the next END
SM1520 Block 1
SM1521 Block 2
SM1522 Block 3
SM1523 Block 4
SM1524 Block 5
SM1525 Block 6
SM1526 Block 7
SM1527 Block 8
SM1528 Block 9
SM1529 Block 10
SM1530 Block 11
SM1531 Block 12
OFF: No trigger
SM1532 Block 13
ON : Trigger
SM1533 Block 14
SM1534 Block 15
SM1535 Block 16
SM1536 Block 17
SM1537 Block 18
SM1538 Block 19
SM1539 Block 20
SM1540 Block 21
SM1541 Block 22
SM1542 Block 23
SM1543 Block 24
SM1544 Block 25
SM1545 Block 26
Special Relay List
Explanation
• Specified the blocks to trigger
when the data is transmitted by
the data tracking instruction
S. TRUCK.
MELSEC-Q
1) for Q4AR only
Set by
ACPU
(When Set)
M9
U
New
U
New
S
New
(Each END)
S (Initial)
New
S (Initial)
New
S (Initial)
New
S (Initial)
New
S
New
(Each END)
S (Status
New
change)
S (Status
New
change) /U
U
New
U
New
Applicable
CPU
Q4AR
App - 18
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