User`s manual

3.3.4 Compatibility with the callback function

The following describes the Q Series C24 callback function that can be used when accessing the QCPU from GX

Developer connected to the Q Series C24.

(1) About the Callback function

(a) What is the Callback function

The callback function is a function that makes it possible to access the QCPU from GX Developer by

reconnection (callback) of the line from the Q Series C24. Transmission costs after line connection from the Q

Series C24 side are borne by the Q Series C24 side.

(b) Settings in order to use the callback function

The callback function can be used by setting it through GX Configurator-SC, then registering it in the Q Series

C24. ( Page 96, Section 3.3.4 (4))

GX Developer that can be called back in accordance with the settings in the Q Series C24 can be selected as

described below.

• If the callback destination GX Developer is fixed (1 module)

(Callback connection (during fixed))

Connection can be made to only fixed GX Developer (1 module) registered in the Q Series C24.

• If it is being made possible to change the callback destination GX Developer

(Callback connection (during designated number))

It is possible to connect to GX Developer when the callback destination telephone number (Call number) is

specified.

• If the maximum number of callback destination GX Developer is limited to 10 modules

(Callback connection (during max. designated number is 10))

Connection is possible with only those pieces of GX Developer (max. 10 modules) with a callback destination

telephone No. registered in the Q Series C24.

*1 A description of the callback operation in 1) to 3) is shown in Page 97, Section 3.3.4 (4) (b).

GX Developer

Modem

1) Line Connection

2) Temporary line disconnection

3) Line connection

4) Access to the QCPU

Setting of callback function

designation settings by the

GX Configurator-SC

Selection of the

connection system

and line connections

5) Line disconnection

Q Series C24

Processing for the GX Developer

to access the QCPU

Processing by the callback function