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XML Encoded Data The XML RS232 output looks something like this. *<w,0,2>552</w,0,2><w,0,1>576</w,0,1><w,0,0>32771</w,0,0> <n,0,0>3200</n,0,0><n,0,1>502</n,0,1>$ The string is sent to the client PC once per second. Encoding Scheme *<Data Type,Station,Element>value</Data Type,Station,Element>$ Data Types b - Bit bit using 0 or 1 w - Word encodes 16 bits using integer values between 0 and 65535 n - Number Number (float) Station 0 to 255 Element Bit 0 to 240 Word 0 to 15 Number 0 to 255 Value Bit 0 to 1 Word 0 to 65535 Number -3.4E+38 to 3.4E+38 Both bit and word data types are used to send bit data. Bit data contains the status of a bit (0 or 1). Word data contains the status (0 or 1) of 16 different bits using a decimal number between 0 and 65535. The same conversion can be done by changing numbering systems on a scientific calculator. Word values are converted from decimal to binary when received. This example XML string encodes the status of 3 bits from station 3. *<b,3,0>1</b,3,0><b,3,1>1</b,3,1><b,3,2>0</b,3,2>$ Station 3 bit status bit element 76543210 data 011 This example XML string encodes the status of 16 bits from station 5. *<w,5,0>239</w,5,0>$ Station 3 bit status bit element 15 8 7 0 data 00000000 11101111 This example XML stream encodes the status of 32 bits from station 5. *<w,5,0>239</w,5,0><w,5,1>32859</w,5,1>$ Station 3 bit status bit element 32 24 23 16 15 8 7 0 data 10000000 01011011 00000000 11101111 Because word type data contains 16 bits, t word element shifts the bit position by 16 The example XML stream encodes the status of 48 bits and 2 numbers from station 0. *<w,0,2>552</w,0,2><w,0,1>576</w,0,1><w,0,0>32771</w,0,0> <n,0,0>3200</n,0,0><n,0,1>502</n,0,1>$ Station 0 bit status element 47 40 39 32 31 24 23 16 15 8 7 0 data 00000010 00101000 00000010 01000000 10000000 00000011 Station 0 number values element 0 1 data 32000 502 Different station numbers can be mixed into the stream.

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