Allen-Bradley 1794-IRT8, Руководство пользователя

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Publication 1794-6.5.12 - November 1997
Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 4 -9
Chapter Summary
In this chapter, you learned how to configure your module’s features and
enter your data.
word 1 cont. Bits 14-15
(16-17)
Input Type Select
Bit 15 14 Input type selection for channels 4-7
0 0 Thermocouple
0 1 RTD
1 0 Not used
1 1
Write Word 2 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 2-wire 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 2-wire RTD (default = 0
Ω
)
0 1 5
Ω
1 0 10
Ω
1 1 15
Ω
Write Word 3 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
Word
Dec. Bits
(Octal Bits)
Description