3. Operation

PROFIBUS DP

Test Environment

RC520 Controller: Pentium III 850 MHz 128 MB memory

Fieldbus I/O:

PCI-DPIO board Master (station address: 0)

Baud rate:

12 Mbps, 9.6 kbps

Connected Slave: Woodhead 16-inpout module (TDP-8C0-B18-02)

Node address: 2

Connection Image

Power Supply

+24V

Input Module

Terminating Resistor

Evaluation

To Standard Input

 

NPN Output

Waveform

 

PNP Output

Generator

 

Waveform

 

 

modification jig

 

D-Sub

PROFIBUS

 

I/F Board

 

Signals with various pulse widths (every 5 msec) were input to the standard I/O input and the input module of the fieldbus I/O at 1 Hz. For 10 minutes (600 seconds), pulse widths of the received signals were measured at 12 Mbps and 9.6 kbps.

Result

12 Mbps: The input devices responded to 25-msec pulse.

9.6 kbps: The input devices responded to 80-msec pulse.

Fieldbus I/O Rev.6

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Epson EM07ZS1647F manual Profibus DP