User`s manual

87
CHAPTER 3 COMMUNICATIONS BY THE MODEM FUNCTION
3
3.3 Specifications
● The remote password unlock and lock processing can be performed only for the Q series C24 of the local station directly
connected to the external device. The remote password unlock and lock processing cannot be performed for the Ethernet
module of the other stations (relay station and access station).
● The remote password unlock processing from the external device is performed using dedicated commands for MC
protocol communication.
● See Page 121, Section 3.3.7 (8) for what to do when the remote password unlock processing is completed abnormally.
QCPU
(*1)
QCPU
QCPU
Ethernet
Ethernet
(*1)
QCPU
*1
*2
*3
(*3)
Ethernet
module
Remote password
check
(When accessing other station QCPU)
Remote password
check
Q series C24
(When accessing the local station QCPU)
A station
(Local station)
(Relay station)
(Access station)
Remote password
Remote
password
2) Access
Modem
1) Unlock processing
3) Lock processing
(*2)
Modem
A station
Modem
Modem
Q series C24
(Local station)
Ethernet
module
Ethernet
module
2) Access
Ethernet
module
3) Lock processing
(*2)
1) Unlock processing
Unlock and lock processing for the local station remote password is possible.
Remote password unlock and lock processing for the relay station
and access station cannot be performed
Lock processing is performed when a line for the modem function is disconnected.
Even if the Ethernet module that transmits a communication request
to other Ethernet is set as a module subject to the remote password check,
unlock and lock processing is not necessary.