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Advantech PCL-849, Руководство пользователя

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Chapter 4  Wiring        31

Wiring

RS-232 signal wiring

Since the RS-232 interface is not strictly defined, many devices have
their own connection methods which may ignore some signal lines or
define reserved lines for other functions. It is best to refer to the user’s
manual for your device for installation instructions. You may find the
following helpful.

In general, DTE (Data Terminal Equipment) refers to the device that
is leading the communication. Examples include PC’s, terminals and
some printers. DCE refers to the device being communicated with or
controlled. Examples include modems, DSU’s (digital service units),
printers and lab/factory equipment.

In some situations you may be able to get by with just three lines: data
on TXD, a signal ground and a handshaking line. Examples are printer
or plotter connections, troubleshooting and situations where you
require only one-wire communication.

Terminal or PC (DTE) connections

DB-25 Male: PCL-849

DB-25 Male or Female:

Terminal

Pin

Signal

Pin

Signal

2

TxD

3

RxD

3

RxD

2

TxD

4

RTS

5

CTS

5

CTS

4

RTS

6

DSR

20

DTR

7

GND

7

GND

20

DTR

6

DSR

8

DCD

8

DCD

Содержание PCL-849

Страница 1: ...PCL 849 4 Port RS 232 Interface Card...

Страница 2: ...vid ed in this manual is intended to be accurate and reliable However Advantech Co Ltd assumes no responsibility for its use nor for any infringements of rights of third parties which may result from...

Страница 3: ...Enhanced Mode 13 Speed Mode selection 18 Chapter 3 Software Installation 19 Operating Environment Selection 20 Driver Installation for DOS Users 20 Driver Installation for Windows 3 1 Users 25 Install...

Страница 4: ......

Страница 5: ...Chapter 1 Introduction 3 1 Introduction C H A P T E R...

Страница 6: ...port two operating modes standard mode and enhanced mode In standard mode each of the four port addresses can be set individually In enhanced mode all four port addresses can be set automatically The...

Страница 7: ...DOS Windows 3 1 PC ComLib Windows 95 Windows NT v Supports surge protection 2000 VDC PCL 849B 849 v PC ComLib software included v LED indicators on each port indicate data flow v Compatible with stand...

Страница 8: ...DTE Data signals TxD RxD RTS CTS DTR DSR DCD RI GND Surge protection 2000 VDC PCL 849B 849 Power requirement 250 mA typical 500 mA max 5 V 70 mA typical 120 mA max 12 V Dimensions 185 mm 98 mm Operat...

Страница 9: ...Chapter 1 Introduction 7 Figure 1 1 Switch and jumper layout...

Страница 10: ...8 PCL 849 User s Manual...

Страница 11: ...2 Hardware Installation C H A P T E R...

Страница 12: ...tions notify our service department or your local sales representative immediately Also notify the carrier Retain the shipping carton and packing material for inspection by the carrier After inspectio...

Страница 13: ...or passive backplane at the rear of the PC and choose any unused slot 5 Remove the screw that secures the expansion slot cover to the PC save the screw to secure the interface card retaining bracket R...

Страница 14: ...simply install the card Note that you will need to disable your CPU card s on board COM ports if any or set them to alternate addresses IRQs PCL 849 Default Configuration Setting Default function JPI...

Страница 15: ...mode each of the four ports has been set up as an address individually Select an address which is not already in use by another card in the system If you are installing more than one PCL 849 card in...

Страница 16: ...owing example shows how to set the base address to 2F8 The switch sum is set to 2F8 200 80 40 20 10 8 HEX Note On the PCL 849 address line A9 does not appear on the DIP switch as it is permanently har...

Страница 17: ...RQ Simply place the jumper on the required interrupt level as shown in the following figure Interrupt Status Register Setup S1 Vector address This feature on the PCL 849 is utilized in the enhanced mo...

Страница 18: ...ser may change the interrupt status address via S1 Please note that the address decoder will occupy a continuous 16 byte area related to the switch setting For example if you set the switch to 210H th...

Страница 19: ...F F O F F O N O H 0 C 2 F F O N O F F O F F O N O H 0 D 2 N O F F O F F O F F O N O H 0 E 2 F F O F F O F F O F F O N O H 0 F 2 N O N O N O N O F F O H 0 0 3 F F O N O N O N O F F O H 0 1 3 N O F F O...

Страница 20: ...eed mode 8x This high speed mode is selected at S2 Normal Speed Mode To select the band rate commonly associated with COM ports such as 2400 4800 9600 115 2 Kbps place the switch as follows High Speed...

Страница 21: ...3 Software Installation C H A P T E R...

Страница 22: ...mon languages including C PASCAL Visual BASIC Quick BASIC Assembly and Clipper PC ComLIB also includes the DataScope data viewer terminal emulator and self diagnostics utilities for easy troubleshooti...

Страница 23: ...Installation 21 Driver selection screen After the screen shows up move the cursor bar using the arrow keys or the mouse to the general serial board field and press ENTER The screen shown below will a...

Страница 24: ...trols the port number assignments for each card When you use a driver function in your program you will identify the ports by these assignments After you have set the IRQ base address baudrate buffer...

Страница 25: ...a TSR Terminate and Stay Resident program you can execute it at any time you do not have to install it in the CONFIG SYS file To install the PCL 849 card driver change to the directory or floppy disk...

Страница 26: ...TSR driver first include head c h main Setup PORT1 PORT2 baud 57600 data 8 stop 1 no parity sio_ioctl 1 B57600 BIT_8 P_NONE STOP_1 sio_ioctl 2 B57600 BIT_8 P_NONE STOP_1 Enable communication ports sio...

Страница 27: ...mming Interface such as Open Comm ReadComm and WriteComm Application software like Windows Terminal program LabVIEW FIX and pcANYWHERE for Windows or other programs that support Windows COMM API calls...

Страница 28: ...windows for the ports can appear simultaneously under TTY However Terminal the application provided by Windows is limited for the use of COM1 to COM4 After completing the installation restart Windows...

Страница 29: ...correct ing IRQ and I O settings You can repeat step 1 to step 5 to add as many ports as you want Max 128 port 6 Enter Control Panel then System then Device Manager 7 Select the newly added Communica...

Страница 30: ...ts to add new COM ports 2 Add new ports using the command sequence given in the following example If you wanted to add the 4 new ports COM3 COM6 listed below you would add each port using the followin...

Страница 31: ...Chapter 4 Wiring 29 4 Wiring C H A P T E R...

Страница 32: ...49 User s Manual Connector Pin Assignments The following diagrams show the pin assignments for DB 37 and DB 25 connectors for RS 232 PCL 849 DB 37 Four Port Connectors DB 25 PCL 849 Pin assignments fo...

Страница 33: ...n Examples include PC s terminals and some printers DCE refers to the device being communicated with or controlled Examples include modems DSU s digital service units printers and lab factory equipmen...

Страница 34: ...don t have to reverse lines 2 and 3 lines 4 and 5 and lines 6 and 20 Because in general the DCE RS 232 interfaces are reversed them selves Terminal without handshake DB 25 Male PCL 849 Terminal PC DT...

Страница 35: ...Appendix A PC I O Address Assignments 33 A PC I O Address Reference A P P E N D I X...

Страница 36: ...060 063 PPI 8255A 070 071 Real Time Clock 080 08F DMA Page Register 0A0 0BF 8259A Interrupt Chip 0C0 0DF Second DMA Controller 8237A 0F0 0FF Math Coprocessor 1F0 1F8 AT Fixed Disk 200 20F Game I O 27...

Страница 37: ...Appendix B Quick Reference 35 B Quick Reference A P P E N D I X...

Страница 38: ...this card DIP1 ON Upper position STANDARD mode DIP1 OFF Lower position ENHANCED mode STANDARD ENHANCED Mode DIP 1 SPEED of S2 is used to decide the speed mode of this card Operating System Mode Conne...

Страница 39: ...3 t r o P h 8 E 3 3 M O C 3 P J 1 P J 4 t r o P h 8 E 2 4 M O C 4 P J 1 P J o N t r o P o N t r o P o N t r o P o N t r o P o N t r o P s s e r d d A O I s s e r d d A O I s s e r d d A O I s s e r d...

Страница 40: ...38 PCL 846 847 User s Manual...

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