Acces I/O products USB-COM232-4A, Руководство пользователя

Страница: 5 / 23

Manual USB-FLEXCOM4 5
Table of Contents
Chapter 1: Introduction ..................................................................................................................................... 6
Features .......................................................................................................................................................... 6
Applications ................................................................................................................................................... 6
Functional Description .................................................................................................................................. 6
RS422 Balanced Mode Operation ............................................................................................................. 6
RS485 Balanced Mode Operation ............................................................................................................. 6
COM Port Compatibility ............................................................................................................................. 7
Communication Mode ................................................................................................................................ 7
Figure 1-1: Block Diagram (Only one full serial channel shown) ................................................................ 8
Baud Rates .................................................................................................................................................. 8
Ordering Guide ............................................................................................................................................... 9
Model Options ............................................................................................................................................ 9
Special Order .............................................................................................................................................. 9
Included with your board .......................................................................................................................... 9
Optional Accessories ................................................................................................................................ 9
Figure 1-2: ADAP9 Screw Terminal Accessory .......................................................................................... 9
Chapter 2: Installation ..................................................................................................................................... 10
Software CD Installation ............................................................................................................................. 10
Installing the Adapter .................................................................................................................................. 10
Chapter 3: Hardware Details .......................................................................................................................... 11
Option Selection .......................................................................................................................................... 11
Figure 3-1: Jumper Labels ........................................................................................................................ 11
Terminations ................................................................................................................................................ 11
Figure 3-2: Simplified Termination Schematic .......................................................................................... 11
Figure 3-3: Option Selection Map ............................................................................................................. 12
Default Shipping Configuration .................................................................................................................. 13
Connectors and Indicator Functions ......................................................................................................... 13
Chapter 4: USB Address Information ............................................................................................................ 14
Address Map ................................................................................................................................................ 14
Chapter 5: Programming ................................................................................................................................ 15
Sample Programs ........................................................................................................................................ 15
Figure 5-1: WinRISC Windows Terminal Program Screen Shot .............................................................. 15
Chapter 6: Connector Pin Assignments ....................................................................................................... 16
Table 6-1: DB9M Connector Pin Assignments .......................................................................................... 16
Table 6-2: 10-Pin Header Connector Pin Assignments ............................................................................ 16
Chapter 7: Specifications ............................................................................................................................... 17
Appendix A: Application Considerations ..................................................................................................... 18
Table A-1: Connections Between Two RS422 Devices ............................................................................ 18
Table A-2: RS485 Data Cable Wiring ....................................................................................................... 18
Table A-2: RS422/485 Specification Summary ......................................................................................... 19
RS485 Data Transmission ........................................................................................................................... 20
Figure A-1: Typical RS485 Two-Wire Multidrop Network ......................................................................... 21
Customer Comments ...................................................................................................................................... 23