2. System retry function
If a satellite terminates a transmission job unsuccessfully, the master either terminates the job immediately or awaits a command given through the keyboard, depending on whether the system retry function is disabled or enabled. When the system retry function is enabled, the master awaits the entry of a command and retries access depending on the command as explained below.
This function is used in the following cases:
•The master has failed to download preset or updated data to all or some of the satellites.
•The master has failed to upload sales reports from all or some of the satellites.
•The satellite has failed to download data to other machines.
Whether the system retry function is enabled or disabled when a transmission error occurs is programmed at the master. (See “4. Specifying whether to enable or disable the system retry function when a transmission error occurs” on page 30.)
(1) When the system retry function is disabled:
The master terminates the transmission job immediately in the following two ways.
If none of the satellites have successfully transmitted data, the transmission is regarded as having ended with an error, which is equivalent to ABORT as discussed below.
If there is any satellite which has successfully transmitted data, the transmission is regarded as either successful or unsuccessful depending on the type of transmission job. In this case, the transmission regarded as successful and the one regarded as unsuccessful are equivalent to IGNORE and ABORT, respectively both of which are explained below.
(2) When the system retry function is enabled:
If a transmission error occurs, the number and error state of the satellite in which the error has occurred and the relevant menu will appear on the display and the master awaits the entry of one of the following commands given through the keyboard:
57
