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(11) Process control instructions
Number
Name
OFF : No-hold
SM1500
Hold mode
ON : Hold
OFF : No-hold
SM1501
Hold mode
ON : Hold
(12) For redundant systems (Host system CPU information *1)
SM1510 to SM1599 are only valid for redundant systems.
All off for standalone systems.
Number
Name
OFF : Redundant system
SM1510
Operation mode
ON : Redundant system
• Distinguishes between system A and system B.
System A identification
• The flag status does not change even if the tracking cable is disconnected.
SM1511
flag
System B identification
SM1512
flag
Debug mode status
OFF : Not in debug mode
SM1513
flag
ON
• Indicates operation system status.
Control system
• The flag status does not change even if the tracking cable is disconnected.
SM1515
judgment flag
Standby system
SM1516
judgment flag
*1: The information of the host CPU module is stored.
Table12.13 Special relay
Meaning
• Specifies whether or not to hold the output value
when a range over occurs for the S.IN instruction
range check.
• Specifies whether or not the output value is held
when a range over occurs for the S.OUT instruction
range check.
Table12.14 Special relay
Meaning
backup mode, stand-
• Turns on when the operating mode is redundant
alone system
system separate.
separate mode
System A
System B
SM1511
ON
OFF
SM1512
OFF
ON
• Turns on when the redundant system operating
: Debug mode
mode is set to debug mode.
Control
Standby
system
system
SM1515
ON
OFF
SM1516
OFF
ON
CHAPTER12 SPECIAL RELAY LIST AND SPECIAL REGISTER LIST
Explanation
Explanation
When TRK. CABLE ERR.
(error code: 6210) occurs (Unknown)
OFF
OFF
When TRK. CABLE ERR.
(error code: 6210) occurs (Unknown)
OFF
OFF
Corres-
ponding
Set by
Corresponding
ACPU
(When Set)
M9
U
New
QnPRH
U
New
Corres-
Set by
ponding
Corresponding
(When Set)
ACPU
M9
S (Each END)
New
S (Initial)
New
QnPRH
S (Initial)
New
S (Status change)
New
12 - 20
1
2
CPU
3
QnPH
12
6
CPU
7
8
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