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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: