User`s manual

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CHAPTER 3 COMMUNICATIONS BY THE MODEM FUNCTION
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3.3 Specifications
(4) Details of buffer memory (for the callback function)
The areas shown below are valid if the Q Series C24 uses the callback function.
(a) Callback function designation area (Address 8193 (2001H))
• If communications are done by connecting to the GX Developer via a modem, specify whether the callback
function is to be used or not. Also specify the callback operation in the case that the callback function is
used.
• This specification becomes valid if "Connection" is entered in the GX Developer connection designation area
(Address 54 (36H).
• Show the setting value (the value stored in this area) in the GX Configurator-SC and show the corresponding
Q Series C24's callback operation. This becomes invalid if any setting values other than those shown below
are specified, and the callback function does not operate.
• When the callback function is not to be used: Auto (0H)
• When the callback function is to be used: Setting 1 (9H) to setting 6 (7H)
Setting 1 (9H): Auto/Callback connection (during fixed)
Setting 2 (BH): Auto/Callback connection (during designation number)
Setting 3 (FH): Auto/Callback connection (during max. designation number is 10))
Setting 4 (1H): Callback connection (during fixed)
Setting 5 (3H): Callback connection (during designation number)
Setting 6 (7H): Callback connection (during max. designation number is 10))
(b) Callback denial notification accumulated count designation area (Address 8194
(2002H))
• Use 0 to FFFFH to designate the accumulated count that will be the notification timing to the QCPU when a
denial of the callback occurs during access from GX Developer after the Q series C24 has been started up.
• The accumulated number of times up to the present a denial of the callback occurred (accumulated count
value in the Q series C24) after starting up can be checked in the area where the accumulated count of
denial of the callback is stored (address 8945 (22F1H)).