User`s manual

CHAPTER 3 COMMUNICATIONS BY THE MODEM FUNCTION

3.3 Specifications

(2) Data communications procedure

Here, the procedure for data communications when using the callback function is shown.

(a) Q series C24 side procedure

Carry out procedure of starting the modem function and data communications in accordance with Page 126,

Section 3.4.1.

• Set the callback function by GX Configurator-SC. ( Page 96, Section 3.3.4 (4))

• Initialize the Q Series C24 side modem. ( Page 126, Section 3.4)

• The modem's initialization completed signal (X10) goes On when modem initialization is completed. Wait

for the line connection from GX Developer.

*1*2

*1 Select the connection system (connect way) from GX Developer, then make line connection.

*2 When the Q Series C24 callback processing is completed normally, the line connection signal (X12) is in the ON state.

See the GX Developer's Operating Manual for details of the line connection screen from the GX Developer when using the

callback function.

(3) Cautions during data communications

(a) Set the GX Developer side modem which the Q Series C24 is to reconnect to

(callback) on "with Auto Reception". (With Auto Reception: This setting enables line

connection from the external device.)

(b) When a request is issued for a line connection from another GX Developer during a

temporary line disconnection from the GX Developer side by callback processing,

the Q Series C24 executes a callback operation for the latter connection request.

The Q Series C24 terminates callback processing to GX Developer that it received a connection request from

earlier.