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Mandatory
1. While the DN611 is under reset processing,
do not issue any request from the S
controller to the DN611, or input/output data
to and from the DN611.
Otherwise, the DN611 will be in down mode
because the request will end in an error
(station mode error) or the module self-
check will end in an error.
Caution
1. When the S controller is in HALT/ERROR
mode, the DN611 in run mode will be in
standby mode.
6F8C0845
Mandatory
1. Do not change node addresses while the S
controller power is on. Otherwise, a node
address setting error will occur. Particularly,
do not change the communication rate
while transmission is under way to a slave
device. To reset, set the DIP switches
correctly, then either issue a reset request
or switch power on again.
Mandatory
1. The DN611 is subject to the following
restrictions on slave devices (polling type)
whose transmission size from the DN611 is
0 byte.
•. If a slave device becomes unable to
communicate with the DN611 for some
reason (power switched off, or connector
disconnected, for example), the DN611
cannot identify that slave device as
abnormal.
Even after the cause of the error has been
removed, communication cannot be
restarted between that slave device and
DN611.
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