Advantech PCI-1739U Manual de usuario descargar pdf (Pagina 17)

7 Chapter 1

1.5.2 Programming with Device Drivers Function Library

Advantech Device Drivers offer a rich function library that can be utilized

in various application programs. This function library consists of numer-

ous APIs that support many development tools, such as Visual C++,

Visual Basic, Delphi and C++ Builder.

1.5.3 Troubleshooting Device Drivers Error

Driver functions will return a status code when they are called to perform

a certain task for the application. When a function returns a code that is

not zero, it means the function has failed to perform its designated func-

tion. To troubleshoot the Device Drivers error, you can pass the error

code to DRV_GetErrorMessage function to return the error message.

Alternatively, you can refer to the Device Drivers Error Codes Appendix

in the Device Drivers Manual for a detailed listing of Error Codes, Error

IDs and the Error Messages.

1.6 Accessories

Cable

PCL-10150-1.2 IDC-50 pin socket connector with flat cable, 1.2M

Wiring Board

PCLD-782B 24-channel Opto-isolated Digital Input Boards

The PCLD-782B digital input daughterboards feature high-voltage (1500

V DC ) optical isolation on all inputs. The PCLD-782B provides either 16

or 24 channels, depending on the connector you use. The PCLD-782B’s

20-pin connector lets you access 16 channels, similar to the PCLD-782.

The PCLD-782B also provides a 50-pin Opto-22 connector with access to

24 channels. Both cards have on-board screw terminals for easy input

wiring. Opticallyisolated signal conditioning provides isolation between

separate channels, as well as between each input channel and the PC. This

isolation prevents floating potential and ground loop problems while pro-

tecting the input lines from potentially damaging fault conditions. A red

LED on each input channel indicates its status. If the input signal is high,

the LED is on. You can configure each channel to work in either isolated

or non-isolated mode. A variable resistor adjusts the threshold level for

all 24 isolated input channels simultaneously.

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Advantech PCI-1739U Manual de usuario Pagina 17