Owner manual

LR4 Table of Contents

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1. General Description.....................................................1

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

3. Relay Details ................................................................2

4. Contact Details.............................................................2

4.1 Types ........................................................................................................2

4.2 Relay Contact Life....................................................................................3

5. Manual Toggle Control................................................3

6. LED Indicators .............................................................4

7. Using SDI-12.................................................................4

7.1 SDI-12 Wiring..........................................................................................4

7.2 SDI-12 Addresses.....................................................................................5

7.3 SDI-12 Commands ...................................................................................5

7.4 SDI-12 Programming Examples for CRBasic Datalogger .......................7

7.4.1 Reading Relay Status Values..........................................................7

7.4.2 Setting Relay Values.......................................................................7

7.4.3 CR200(X) Programming.................................................................7

7.5 Edlog Set Relay Example .........................................................................8

8. Using Modbus..............................................................9

8.1 Wiring for Modbus...................................................................................9

8.1.1 RS-232 ............................................................................................9

8.1.2 RS-485 ..........................................................................................10

8.2 Modbus Baud Rate .................................................................................11

8.3 Modbus Mode.........................................................................................11

8.4 Modbus Address.....................................................................................11

8.5 Modbus Supported Commands...............................................................11

8.6 Modbus Operation..................................................................................11

9. Firmware Update Procedure.....................................12