APPENDICES
Appendix 1 Special Relay List
App
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Number
Name
Meaning
Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
SM1549
Data tracking transfer
trigger specification
OFF : No trigger
ON
: Trigger
SM1549
Block 30
<In the case of Q4AR>
When data is transferred by
the data tracking instruction
S. TRUCK, the target block
is specified as trigger.
<In the case of QnPRH>
• 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
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.
<In the case of
Q4AR>
U
<In the case of
QnPRH>
S (initial)/U
New
Q4AR
QnPRH
SM1550
SM1550
Block 31
SM1551
SM1551
Block 32
SM1552
SM1552
Block 33
SM1553
SM1553
Block 34
SM1554
SM1554
Block 35
SM1555
SM1555
Block 36
SM1556
SM1556
Block 37
SM1557
SM1557
Block 38
SM1558
SM1558
Block 39
SM1559
SM1559
Block 40
SM1560
SM1560
Block 41
SM1561
SM1561
Block 42
SM1562
SM1562
Block 43
SM1563
SM1563
Block 44
SM1564
SM1564
Block 45
SM1565
SM1565
Block 46
SM1566
SM1566
Block 47
SM1567
SM1567
Block 48
SM1568
SM1568
Block 49
SM1569
SM1569
Block 50
SM1570
SM1570
Block 51
SM1571
SM1571
Block 52
SM1572
SM1572
Block 53
SM1573
SM1573
Block 54
SM1574
SM1574
Block 55
SM1575
SM1575
Block 56
SM1576
SM1576
Block 57
SM1577
SM1577
Block 58
SM1578
SM1578
Block 59
SM1579
SM1579
Block 60
SM1580
SM1580
Block 61
SM1581
SM1581
Block 62
SM1582
SM1582
Block 63
SM1583
SM1583
Block 64
SM1590
Switching status from
the network module
OFF : Normal
ON : Switching
unsuccessful
• Turns ON when switching could not be executed
normally if the network module had detected a
network fault and issued a switching request to the
host CPU module.
S (Error ocurrs)
New
Q4AR
System switching
enable/disable flag
from network module
OFF : System switching
request issuing module
absent
ON : System switching
request issuing module
present
• Turns ON when a system switching request is issued
from the network module. The module No. that
issued system switching can be checked by SD1590.
• Turns OFF when all bits of SD1590 are OFF.
S (Each END)
QnPRH
SM1591
Standby system error
detection disable flag
at system switching
ON : Error is not detected by
new standby system at
system switching
OFF : Error is detected by
new standby system at
system switching
This flag is used to determine if the new standby station
detects 6210:STANDBY during system switching.
This applies to the following switching methods:
• System switching from GX Developer
• System switching using dedicated instruction
• System switching by the intelligent function module
U
New
SM1592
Enable/disable user
system switching
OFF : Disable user system
switching
ON : Enable user system
switching
• This flag enables system switching by the user from
GX Developer or by dedicated instruction.
(SP.CONTSW).
U
New