User`s manual

154
3.4.7 Data communication and notification
This section explains the cautions for data communication with the partner device using modem function and
procedures for notification to pager receivers.
(1) Requirements for data communication and notification
(a) When communicating data with external devices
Perform the appropriate processing up to line connection or modem/TA initialization, depending on whether or
not the line connection is initiated from the Q series C24 side.
After line connection, data communication can be performed using an MC protocol/non procedure
protocol/bidirectional protocol in full-duplex communication.
• When line connecting from the Q series C24 side
Processing up to line connection as shown in Page 148, Section 3.4.6.
• When line connecting from the external device
Processing up to the initialization of the modem/TA as shown in Page 144, Section 3.4.5.
(b) When notifying to pager receivers
Perform processing up to the initialization of the modem/TA as shown in Page 144, Section 3.4.5.
*1
*1 In notification to pager receiver, since the line connection is performed during notification processing, line connection
processing is unnecessary. However, be sure to register data for connection.
(2) Buffer memory used and I/O signals
(a) When communicating data with the external device
Only buffer memory and I/O signals the user uses for data communication (MC protocol/non procedure
protocol/bidirectional protocol). Communicate data using the connection in progress signal (X12)ON as the
interlock signal.
There is no I/O signal or buffer memory for modem functions used in data communication.
X12
Program for data communication
(ON)
(ON)
(ON)
Y10
X10
Y11
X12
*
Data communication is possible
Initialization
request
Initialization
completion
Connection
request
Connection in
progress
RS-232 CD terminal
Initialization
Dial
Result code
receive
Set "Display a result code
using the AT command" in
the local station side modem.
*