The User Program controls all the operations of the APT Programmable Terminal. It is created and edited on the PC compatible computer by means of the APT2 programming software and then downloaded to the APT terminal.
Parts of the user program
- Screens
- the screen definition describes the layout of items on the display and can contain fixed texts and the functions
- there can be defined up to 1000 screens
- the active screen selection is made by the PLC, optionally also by the keys <PgUp> and <PgDn> on the terminal
- Control Table - controls the basic data transmission, i.e. the beeper control, the active screen number, the keyboard status, the real time clock data, an additional input or output board data(for the APT80A-24AE), two-color LEDs (for the APT Micro)
- ASD tables - for the data display on ASD displays (only for the extended model APT80A-24AE)
- Settings - the communication settings for communication with the control system - the communication protocol, port and parameters, the system language (English, German, Czech), the beeper setting, the terminal address, the additional board type and the connected ASD display type
Functions
The purpose of functions is to display and possibly change the data in the connected PLC or in the terminal itself. There are following functions available: | Number - display and input of numerical values - selectable input (BIN, BCD) and output (DEC, HEX, OCT, BIN) format, negative numbers, conversions and limits, numerical or "up-down" edit |
 | Text - text display and input |
 | Selected text - display and selection of the text corresponding to the numerical code |
 | Bit - display and manipulation the logical data (bits)
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 | Bargraph - graphical representation of a numerical value |
