文档详情

partlow_使用说明书手册_datavu5_modbus.pdf

发布：2024-12-19约6.04万字共36页下载文档
文本预览下载声明

DataVU5-InterfaceManualModbus

59482

Contents

1Introduction5

1.1Preface5

1.2Typographicalconventions6

1.2.1Warningsigns6

1.2.2Notesigns6

1.2.3Representationmodes6

2General7

2.1Areasofapplication7

2.2Systemrequirements7

2.3Identifyingtheinterface7

3Connectingtheinterface8

3.1Connectiondiagram8

3.2RS23210

3.3SwitchingbetweenRS232andRS48510

4Protocoldescription11

4.1Master-slaveprinciple11

4.2Transmissionmode(RTU)11

4.3Deviceaddress12

4.4Timingsequenceforcommunication12

4.5Structureofthedatablocks14

4.6DifferencebetweenMODbusandJbus14

4.7Checksum(CRC16)15

4.8Configurationoftheinterfaceonthebackpanel16

4.9Configurationoftheinterfaceonthefrontpanel16

4.10Passwordprotectionfortheserialinterface17

5Functions18

5.1Readnwords19

5.2Writeoneword20

5.3Writenwords21

Contents

6Dataflow22

6.1Transmissionformat22

7Errormessages

显示全部
相似文档