Mitsubishi MELSEC Q Series Programming Manual page 1184

(10) Built-in Ethernet port QCPU and built-in Ethernet function
Number
Name
Time setting
SM1270 function (SNTP
client) execution
Remote
password
SM1273
mismatch count
clear
*1 This applies to the Built-in Ethernet port QCPU.
(11) Process control instruction
Number
Name
SM1500
Hold mode
SM1501
(12) Redundant system (host system CPU information
The special relay (SM1510 to SM1599) is valid only for redundant systems. All bits are set to off for stand-alone
systems.
Number
Name
SM1510 Operation mode
System A
SM1511
identification flag
System B
SM1512
identification flag
Debug mode
SM1513
status flag
App-176
Meaning
OFF : No time setting
function
(SNTP client) This relay is turned on to perform the time
execution setting function (SNTP client). (Turns on only
ON : Time setting when "Use" has been set for the time setting
function function in the time setting parameter.)
(SNTP client)
execution
This relay is turned on to clear the
OFF : Normal
accumulated number of mismatched remote
ON : Clear
password entries (SD979 to SD999).
Meaning
Specifies whether or not to hold the output
value when a range over occurs for the S.IN
OFF : No-hold instruction range check.
ON : Hold
Specifies whether or not the output value is
held when a range over occurs for the S.OUT
instruction range check.
Meaning
OFF : Redundant
system backup
mode,
stand-alone This relay is on while the system is
system operating in the separate mode.
ON : Redundant
system separate
mode
• Distinguishes between system A and system B.
• The flag status does not change even if the tracking cable is
disconnected.
System A System B
SM1511 ON OFF
SM1512 OFF ON
OFF : Not in debug
This relay is on while the system is
mode
operating in the debug mode.
ON : Debug mode
Explanation
Explanation
Explanation
If TRK. CABLE ERR.
(error code: 6210) occurred (Unknown)
OFF
OFF
Corres-
ponding
Set by
ACPU
(When Set)
M9
U New
Corres-
ponding
Set by
ACPU
(When Set)
M9
U New
*1
)
Corres-
Set by ponding
(When Set) ACPU
M9
S (Every END
processing)
New
S (Initial)
Corresponding
CPU
*1
QnU
LCPU
Corresponding
CPU
QnPH
QnPRH
Corresponding
CPU
QnPRH