User`s manual

153
CHAPTER 3 COMMUNICATIONS BY THE MODEM FUNCTION
3
3.4 Start-up of the Modem Function
(b) Example of simultaneous execution of initialization and line connection from the Q
series C24 side
When the initialization and connection data have been registered from GX Configurator-SC or from the
programmable controller CPU
*1 Page 139, Section 3.4.4
*2 Page 134, Section 3.4.3, Page 139, Section 3.4.4
Remark
When the line connection is initiated from the partner device, neither registration, setting nor connection processing is
necessary.
As shown in example of Page 149, Section 3.4.6 (3), data communication is possible if the connection in progress signal
(X12) turns ON after the completion of Q series C24 modem/TA initialization.
For an example of the modem/TA program for initialization, see Page 144, Section 3.4.5.
*2
Sets connection request signals
Line connection command
• Data for initialization registration
• Data for connection registration
Turns the ready flag ON
Turns the line connectable
flag ON
When the connection in progress
signal ON (normal completion),
sets the connection complete flag
Reads the error code at
connection abnormal completion
Resets the flag with the clear
command
X10: Initialization complete signal
X1E: Ready signal
X1F: WDT error signal
M0: Accessible flag
M1: Data registration complete flag
for initialization
M2: Data registration complete flag
for connection
*1
M3: Initialization complete flag
M40: Connectable flag