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Table of Contents
Table of Contents...................................................................................................................1-2
1. System Kernel............................................................................................................1-6
1.1. Application Programming Interface.................................................................................. 1-6
1.2. Keypad Subsystem............................................................................................................ 1-7
1.3. Display Subsystem............................................................................................................ 1-7
1.4. Communication Subsystem............................................................................................... 1-8
1.4.1. Point to point mode.................................................................................................... 1-8
1.4.2. Multi-point mode....................................................................................................... 1-8
1.5. Real time clock subsystem ................................................................................................ 1-8
1.6. Relay output and Digital input subsystem.......................................................................... 1-8
1.7. Bar code / Magnetic stripe / Proximity / ICC .................................................................... 1-9
1.8. Download Program in Point-to-point mode....................................................................... 1-9
1.9. Download Program in Multi-point mode......................................................................... 1-10
2. Data Structure..........................................................................................................2-14
2.1. Device Control Table...................................................................................................... 2-14
2.2. Type Definition .............................................................................................................. 2-14
2.3. Barcode Control Table.................................................................................................... 2-15
2.3.1. Type Definition........................................................................................................ 2-15
2.4. Communication Control Table of Host port..................................................................... 2-16
2.4.1. Type Definition........................................................................................................ 2-16
2.5. Terminal Control Table (available for host port only) ..................................................... 2-17
2.5.1. Type Definition........................................................................................................ 2-17
3. I/O Function Calls....................................................................................................3-20
3.1. LCD Display INT 10H.................................................................................................. 3-20
00 Clear screen............................................................................................................. 3-20
01 Set cursor type ......................................................................................................... 3-20
02 Set cursor position ................................................................................................... 3-20
03 Get cursor position................................................................................................... 3-21
04 Scroll screen ............................................................................................................ 3-21
1A Enable/disable LCD Backlight INT 21H ................................................................. 3-21
3.2. Communication Environment Setup ............................................................................... 3-22
1C Select COM1 or COM2 as the host port................................................................... 3-22
1C Set host port protocol............................................................................................... 3-23
1C Set serial port flow control....................................................................................... 3-23
19 Set COM1 port as RS485 or modem ........................................................................ 3-24
3.3. Host Port for Multi-point Protocol I/O (INT21H) ........................................................... 3-24
1C Setup multi-point address......................................................................................... 3-24
1C Set polling timeout duration..................................................................................... 3-24
5F Read host port.......................................................................................................... 3-25
60 Output data.............................................................................................................. 3-25
61 Check if Busy-port................................................................................................... 3-25
3.4. Serial I/O for RS-232 and RS-485................................................................................... 3-26
RS-232 port serial I/O using INT 34H................................................................................ 3-26
01 Input data ................................................................................................................ 3-26
02 Output data.............................................................................................................. 3-27