Some versions of the WXT520 weather station have heating options. It is possible for users to activate them within iChart software.

1. Open iChart with a current project.

2. Go to Advanced | iSIC | iSIC.

3. Select the correct PC COM port, Connection and iSIC Address. Press Connect.

Figure 1: Connecting to an iSIC


 4. Click the General tab to confirm the connection, then click the SDI-12 tab.

Figure 2: SDI-12 tab


5. To turn the heating function on, enter the below SDI-12 commands, where N = SDI-12 address.



 6. The heat control settings have been changed. To verify the heat control settings, enter:


 The following results should appear:


 Note: “I” and “S” can be different but “R” and “H” must be as shown.

7. To verify heating temperature and voltage, enter:


 The following results should appear:


 Wait 3 seconds, then enter:


 Results similar to these should appear:


Note: In this example, 42.2 is the heating temperature, 14.1 is the heating voltage and 14.6 is the supply voltage. These numbers will vary.


REV: 13G19

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