Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual - Manual (Page 57)

2–37 How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
Description
Dec. Bits
(Octal Bits)
Word
Write Word 2
cont
Bits 14-15
(16 17)
Input Type Select
cont. (16-17)
Bit 15 14 Input type selection for channels 4-7
0 0 Thermocouple
0 1 RTD
1 0
Not used
1 1
Not used
Write Word 3 00-15 (00-17) RTD loop resistance offset select bits - used when input type is set to RTD and
sensor mode select is set to 2Ćwire with loop resistance compensation. Allows you to
set the type of RTD loop resistance compensation used for all RTDs or one of three
fixed values for all channels. NOTE: Not applicable to 10 Ω copper RTD, which defaults
to 0 Ω .
Bit 01 00 RTD channel 0
Bit 03 02 RTD channel 1
Bit 05 04 RTD channel 2
Bit 07 06 RTD channel 3
Bit 09 08 RTD channel 4
Bit 11 10 RTD channel 5
Bit 13 12 RTD channel 6
Bit 15 14 RTD channel 7
0 0 Use channel loop compensation value stored during calibration
procedure for 2Ćwire RTD (default = 0 Ω )
0 1 5 Ω
1 0 10 Ω
1 1 15 Ω
Write Word 4 00-07 Extended data table command data bits - These bits are written to the module
during calibration. They are used to define offset, gain and general channel calibration.
08-14 (10-16) Extended data table command bits - These bits are written to the module during
calibration. They are used to select channel calibration action.
15 (17) Reserved for factory use only