492
(17)E-mail send/receive function
*1 Built-in Ethernet port LCPU whose serial number (first five digits) is "16112" or later
(18)Redundant system (tracking information)
The special relay (SM1700 to SM1799) is valid when the redundant system is in backup mode or in separate
mode. All bits are set to off for stand-alone systems.
Number Name Meaning Explanation
Set by
(When Set)
Corresponding
ACPU
M9
Corresponding
CPU
SM1659
MC protocol
command being
processed flag
OFF: Not being
processed
ON: Being processed
• This relay turns on while the MC protocol
command is being processed.
• If the received mail is an MC protocol
command mail, the relay turns off during
the END processing of the scan where the
command is processed and the return mail
is sent.
S (Status
change)
New
LCPU
*1
SM1660
MC protocol
command error
flag
Turns on when an MC
protocol command error
is detected.
• This relay turns on when an MC protocol
command error is detected. The relay also
turns on when execution of MC protocol
command is disabled in parameter.
• The relay turns off upon execution of the e-
mail receive instruction.
S (Error) New
LCPU
*1
SM1661
E-mail address
backup
processing flag
OFF: Not executed
ON: Being executed
• This relay turns on when the e-mail
address backup processing starts.
• The relay turns off during the END
processing of the scan where the
processing completes.
S (Status
change)
New
LCPU
*1
SM1662
Incoming mail
check flag
OFF: No incoming mail
ON: Mail arrived
• This relay turns on when there is incoming
mail on the server when checked.
• The relay turns off during the END
processing of the scan where the e-mail
receive instruction processing completes.
S (Status
change)
New
LCPU
*1
Number Name Meaning Explanation
Set by
(When Set)
Corresponding
ACPU
M9
Corresponding
CPU
SM1700
Transfer trigger
completion flag
OFF: Transfer
uncompleted
ON: Transfer
completed
This relay remains on for one scan upon
completion of a transfer for any of the blocks
1 to 64.
S (Status
change)
New QnPRH
SM1709
Manual system
switching
disable/enable
setting during
online program
change
redundant
tracking
ON: Manual system
switching enabled
(Disable
canceled)
OFF: Manual system
switching
disabled
(1) This relay is turned from off to on to
enable the user to switch a system
during online program change for
redundancy. After the manual system
switching disable status is canceled, the
system automatically turns off SM1709.
(2) A system can be switched even a online
program change for redundancy is
being performed and regardless of the
status of this relay, if the reason for the
switching is any of the following:
• Power-off
• Reset
• Hardware failure
• CPU stop error
(3) The system switching disable status
can also be canceled by this relay
during the following states.
• Multiple-block online program change
redundant tracking execution status
• File batch online program change
redundant tracking execution status
S
(Request)/U
New QnPRH
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