Sensoray 2518 Manual do Utilizador descarregar pdf (Página 2)

Table of Contents

Sensoray Model 2518/2519 Ethernet Smart A/D™ i Table of Contents

Basics

1.1 Limited Warranty . . . . . . . . . . . . . . . . 1

1.2 Special Handling Instructions. . . . . . . 1

Introduction

2.1 Functional Description . . . . . . . . . . . . 2

2.1.1 Ethernet Base Unit

2.1.2 Smart A/D™ Daughter Boards

2.1.3 Software

2.2 Product Features . . . . . . . . . . . . . . . . .3

2.3 Block Diagram . . . . . . . . . . . . . . . . . . . 3

2.4 Watchdog Timer. . . . . . . . . . . . . . . . 4

2.5 Reset State. . . . . . . . . . . . . . . . . . . . . 4

2.5.1 Reset State

2.6 Visual Indicators. . . . . . . . . . . . . . . . 4

2.6.1 Fault Indicator

2.6.2 Heartbeat Indicator

2.6.3 Network Status Indicators

Network Interface

3.1 The Smart A/D™ Paradigm . . . . . .5

3.2 I/O Transaction Time. . . . . . . . . . . .5

3.2.1 Influence of Network Traffic

3.3 IP Addresses . . . . . . . . . . . . . . . . . . .5

3.3.1 IP Address Allocation

3.4 Supported Protocols. . . . . . . . . . . . . 5

3.4.1 Address Resolution Protocol (ARP)

3.4.2 Internet Protocol (IP)

3.4.3 Internet Control Message Protocol (ICMP)

3.4.4 User Datagram Protocol (UDP)

3.5 Network Architecture . . . . . . . . . . .6

3.5.1 Trivial Networks

3.5.2 Non-Trivial Networks

3.6 Other Information Sources . . . . . . . 7

Configuration

4.1 Overview . . . . . . . . . . . . . . . . . . . . . .8

4.2 Network IP Address Selection. . . . . 8

4.2.1 Shunt Locations

4.2.2 Programming the IP Address

4.2.3 Default IP Address

4.2.4 Choosing an IP Address

4.3 Model 518 Smart A/D™ Boards . . . 9

4.3.1 Shunt Locations

4.3.2 Base Address Selection

4.3.3 Signal Conditioning Circuits

4.3.4 Side Effects

4.3.5 Recommended Settings

4.3.6 Shunt Mapping

4.3.7 Default SCC Configuration

Sensor Connections

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . 12

5.1.1 Sensor Hot Insertion

5.2 Terminal Block Pinouts . . . . . . . . . . 12

5.3 Sensor Channels . . . . . . . . . . . . . . . . 12

5.3.1 Sense Terminals

5.3.2 Excitation Terminals

5.3.3 Shield Terminal

5.4 RTDs, Resistors and Thermistors. . 13

5.4.1 Two-wire Circuit

5.4.2 Three-wire Circuit

5.4.3 Four-wire Circuit

5.4.4 Recommended Practice

5.5 DC Voltage Sources . . . . . . . . . . . . . 14

5.5.1 Recommended Practice

5.6 Thermocouples . . . . . . . . . . . . . . . . . 14

5.6.1 Recommended Practice

5.7 Strain and Pressure Gages. . . . . . . . 14

5.7.1 Recommended Practice

5.8 4-to-20 mA Current Loops . . . . . . . 15

5.8.1 Current Loop Excitation

Programming

6.1 Overview . . . . . . . . . . . . . . . . . . . . . . 16

6.2 Standardized Interface. . . . . . . . . . . 16

6.2.1 Distribution Diskette

6.2.2 API Functions

6.2.3 Channel Numbering Convention

6.3 Board Configuration Functions . . . 16

6.3.1 ResetBoard()

6.3.2 GetFaultFlags()

6.3.3 GetFWVersion()

6.3.4 SetHiSpeedMode()

6.3.5 SetReject50Hz()

6.4 Channel Configuration Functions . 17

6.4.1 SetSensorType()

6.4.2 SetFilter()

6.4.3 SetFailMode()

1 2 3 4 5 6 7 ... 29 30

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