Lutron Electronics PPH-2108 Operation Manual page 21

Each digit indicates the following status :
D15 Start Word
D14 4
D13 When send the upper display data = 1
When send the lower display data = 2
D12 & D11 Annunciator for Display
℃
D10 Polarity
0 = Positive 1 = Negative
D9 Decimal Point(DP), position from right to the
left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP
D8 to D1 Display reading, D8 = MSD, D1 = LSD.
For example :
D0 End Word
RS232 setting
Baud rate
Parity
Data bit no.
Stop bit
= 01
℉
If the display reading is 1234, then D8 to
D1 is : 00001234
9600
No parity
8 Data bits
1 Stop bit
= 02 pH = 05
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