Campbell-scientific MD485 RS-485 Multidrop Interface Instrukcja Użytkownika Pobierz pdf (Strona 3)

MD485 Table of Contents

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1. Introduction..................................................................1

2. Specifications ..............................................................1

3. System Components ...................................................2

3.1 MD485 RS-485 Multidrop Interface ........................................................2

3.1.1 Ground Lug.....................................................................................2

3.1.2 Indicator LEDs................................................................................2

3.1.3 Configuring the MD485..................................................................3

3.2 Power Supplies .........................................................................................4

3.3 RS-485 Cable............................................................................................4

3.4 Serial Cables .............................................................................................5

4. Quick Start....................................................................5

5. System Configuration .................................................8

5.1 Transparent Communication.....................................................................9

5.2 MD9 Emulation ......................................................................................11

5.3 PakBus Networking................................................................................12

6. Combining with Other Devices.................................12

7. Call-back.....................................................................13

8. Wiring Specifications ................................................13

8.1 RS-485 Line Length ...............................................................................13

8.2 Grounding...............................................................................................13

8.3 Protection and Isolation ..........................................................................14

8.4 Termination ............................................................................................14

8.5 Summary.................................................................................................14

A. Phone to MD485 Network ....................................... A-1

B. RF401 to MD485 Network ....................................... B-1

B.1 Connection using a PS100 with A100 .................................................B-1

B.2 Connection using a Null Modem Cable...............................................B-4

1 2 3 4 5 6 7 8 ... 67 68

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Campbell-scientific MD485 RS-485 Multidrop Interface Instrukcja Użytkownika Strona 3