Publication 1794-6.5.12 - September 2011
34
Read and Write Configuration Maps for the FLEX I/O Module
Word
Dec. Bits
(Octal Bits)
Description
Read Word 10
00…07
Extended data table data response bits
– These
bits echo the EDT command data written to the
module during calibration.
08…14
(10…16)
Extended data table command response bits
–
These bits echo the EDT command written to the
module during calibration.
15 (17)
Reserved for factory use
Bit/Word Descriptions for Block Transfer Write Words
Word
Dec. Bits
(Octal Bits)
Description
Write Word 0
00…02
Input Filter Selection bits
Bit
02 01 00
Filter Time Constants
– actual filtering depends on the module mode of
operation
0
0
0
Hardware filtering only (default filtering)
0
0
1
25 ms
0
1
0
100 ms
0
1
1
250 ms
1
0
0
500 ms
1
0
1
1s
1
1
0
2
s
1
1
1
5
s
Bits 03…05
Reference Junction
– used when input type is set to thermocouple and sensor mode is set to
internal compensation. Sets a fixed reference junction to compensate all thermocouple channels.
Bit
05 04 03 Reference Junction
0
0
0
0 °C (32 °F)
0
0
1
20 °C (68 °F)
0
1
0
25 °C (77 °F)
0
1
1
30 °C (86 °F)
1
0
0
40 °C (104 °F)
1
0
1
50 °C (122 °F)
1
1
0
60 °C (140 °F)
1
1
1
70 °C (158 °F)
Bits 06…07
Fault Mode bits
– when a bit is set (1), fault mode is enabled for that channel. Bit 06 corresponds to
channels 0…3; bit 07 corresponds to channels 4…7.
0 = Disabled
1 = Enable wire-off detection
Bits 08…11
(10…13)
Data format
– module defaults to -4000…10000 in millivolt mode, and 0…5000 in
Ω
mode with
implied decimal points (i.e. -40.00mV, 0.1
Ω
) whenever °C, °F, °K is selected.
Summary of Contents for Allen-Bradley 1794-IRT8K
Page 4: ...Publication 1794 6 5 12 September 2011 iv Summary of Changes Notes ...
Page 8: ...Publication 1794 6 5 12 EN E September 2011 viii Table of Contents Notes ...
Page 62: ...Publication 1794 6 5 12 September 2011 50 Calibrate Your Module Notes ...
Page 84: ...Publication 1794 6 5 12 September 2011 72 Index Notes ...
Page 85: ...Publication 1794 6 5 12 September 2011 Index 73 ...
