User`s manual

70
3.1.1 Features
The following explains the features of the modem function.
(1) Interface that can use the modem function
(a) The modem function can be used with the Q series C24 using an RS-232 interface.
(b) For the QJ71C24(N)-R2 and LJ71C24-R2, the modem function can be used for only
one of the two RS-232 interfaces.
Through the other interface of the Q series C24, direct data communication with an external device can be
performed using MC protocol, non procedure protocol or bidirectional protocol (independent operation).
(2) Initialization, line connection and disconnection of the modem or TA
(a) The following set values for line connection can be used by storing to the Q series
C24 Flash ROM in multiple sets.
• Modem/TA initialization data (AT command)
User setup: 30 sets (78 bytes/set); default value: 13 sets
• Connection data
User setup: 30 sets (80 bytes/set)
(Telephone number of the connection destination and display message to the pager receiver.)
(b) By registering the above data to the Q series C24 ahead of time, the modem/TA
(terminal adapter) initialization, line connection (dialing), and line disconnection can
be performed with ease.
(c) When the no-communication interval time (1 min to 120 min) is set, the Q series C24
disconnects the line when a no-communication condition has occurred for the set
period of time following the line connection.
QJ71C24-R2
CH1. CH2.
CH1.
CH2.
Communication using
the modem function
Communication without using
the modem function