Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual - Manual (Page 55)

2–35 How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
Description
Dec. Bits
(Octal Bits)
Word
Bits 04-05 Sensor Mode Select bits
Bit 05 04 Sensor mode select for channels 0-3
Thermocouple
0 0 External compensation - uses coldjunction sensors
0 1 Internal compensation - uses the value selectedfor
reference junction selection"
1 0 No compensation (Data is referencedto 0 o C.)
1 1 Differential measurement between 2 channels (0-1, 2-3, 4-5, 6-7)
RTD
0 0 2Ćwire RTD no compensation
0 1 2Ćwire RTD with user selectedcompensation
1 0 3Ćwire RTD
1 1 4Ćwire RTD
Bits 06-07 Input Type Select
Bit 07 06 Input type selection for channels 0-3
0 0 Thermocouple
0 1 RTD
1 0
Not used
1 1
Not used