Table of Contents
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Number
Name
SM1549
SM1550
SM1551
SM1552
SM1553
SM1554
SM1555
SM1556
SM1557
SM1558
SM1559
SM1560
SM1561
SM1562
SM1563
SM1564
SM1565
Data tracking transfer
OFF : No trigger
SM1566
trigger specification
ON : Trigger
SM1567
SM1568
SM1569
SM1570
SM1571
SM1572
SM1573
SM1574
SM1575
SM1576
SM1577
SM1578
SM1579
SM1580
SM1581
SM1582
SM1583
OFF : System switching
System switching
enable/disable flag
SM1590
ON : System switching
from network module
ON : Error is not detected by
Standby system error
SM1591
detection disable flag
OFF : Error is detected by
at system switching
OFF : Disable user system
Enable/disable user
SM1592
system switching
ON : Enable user system
Table12.13 Special relay
Meaning
SM1549
Block 30
SM1550
Block 31
SM1551
Block 32
SM1552
Block 33
SM1553
Block 34
SM1554
Block 35
SM1555
Block 36
SM1556
Block 37
SM1557
Block 38
SM1558
Block 39
SM1559
Block 40
SM1560
Block 41
SM1561
Block 42
SM1562
Block 43
SM1563
Block 44
SM1564
Block 45
SM1565
Block 46
SM1566
Block 47
SM1567
Block 48
SM1568
Block 49
SM1569
Block 50
SM1570
Block 51
SM1571
Block 52
SM1572
Block 53
SM1573
Block 54
SM1574
Block 55
SM1575
Block 56
SM1576
Block 57
SM1577
Block 58
SM1578
Block 59
SM1579
Block 60
SM1580
Block 61
SM1581
Block 62
SM1582
Block 63
SM1583
Block 64
request issuing module
• Turns ON when a system switching request is issued
absent
from the network module. The module No. that
issued system switching can be checked by SD1590.
request issuing module
• Turns OFF when all bits of SD1590 are OFF.
present
This flag is used to determine if the new standby station
new standby system at
detects 6210:STANDBY during system switching.
system switching
This applies to the following switching methods:
• System switching from GX Developer
new standby system at
• System switching using dedicated instruction
system switching
• System switching by the intelligent function module
• This flag enables system switching by the user from
switching
GX Developer or by dedicated instruction.
(SP.CONTSW).
switching
CHAPTER12 SPECIAL RELAY LIST AND SPECIAL REGISTER LIST
Explanation
(When Set)
• When data is transferred
based on the tracking
setting of the redundant
parameter dialog box, the
target block is specified
as trigger.
• When "Auto tracking
S (initial)/U
block No. 1" is enabled in
the tracking setting,
SM1520 is turned ON by
the system at power ON/
STOP to RUN. In other
cases, SM1520 to
SM1583 are turned ON
by the user.
S (Each END)
Corres-
Set by
ponding
Corresponding
ACPU
CPU
M9
New
QnPRH
New
U
New
U
New
12 - 22
1
2
3
12
6
7
8
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