Sharp UP-3500 - Manual (Page 18)

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All REG-mode transaction data in each satellite is saved in its T-LOG buffer. T-LOG polling is a data
collecting system in which the master collects data from the T-LOG buffers in satellites.
A request for T-LOG polling is issued from the satellite to the master when the number of data records in its
T-LOG buffer exceeds a predetermined number.
As the master detects such a request, it starts collecting T-LOG buffer data. After collecting data from one
satellite, the master waits for a preset time and starts collecting data from another satellite. In T-LOG polling,
the data transmitted to the master is stored in the corresponding file.
The data flow in T-LOG polling is shown below.
Polling sequence (see the figure above.)
(1) Satellite A makes a request for polling.
(2) The master detects the request and starts collecting T-LOG data from satellite A.
(3) The T-LOG data is sent to the master.
(4) After receiving T-LOG data from satellite A, the master waits for a preset time.
(5) The master detects a request from another satellite (B, C or D) and starts polling for it.
You can specify in the PGM2 mode whether the entry function of a satellite is disabled (LOCK) or enabled
(CONTINUE) when the T-LOG buffer is full.
If it is disabled, an error message “T-LOG FULL” will be displayed and you are not allowed to make any
entry in the REG/MGR mode at the satellite until the error message is cleared.
If it is enabled, you can continue entries but cannot save the entered data. Even if data is entered after the
T-LOG buffer becomes full, the previous data saved in the file will not be erased.
• Depending on a remaining capacity of T-LOG buffer, T-LOG full indicator “T” appears on the
top right of the screen in a colored square: green for less than 20 percent remaining, yellow for
less than 10 percent remaining and red for less than 5 percent remaining.
• For the programming whether or not to lock a registration entry when the T-LOG file is full, see
the UP-3500 Instruction Manual.
• For the T-LOG polling between the master and MWS, please consult your authorized SHARP
dealer.
NOTE
Master
Satellite A Satellite B Satellite C Satellite D
(1) (5)
(4)
(2) (3)
11. T-LOG polling