
Publication 1794-UM064B-EN-P - May 2014
Communicate With Your Module 37
Sensor
Ch 4…7
Sensor
Mode
Ch 4…7
Sensor Type Ch 4…7 Sensor Ch 0…3 Sensor Mode
Ch 0…3
Sensor Type Ch 0…3
Write 1
RTD Offset
Ch 7
RTD Offset
Ch 6
RTD Offset
Ch 5
RTD Offset
Ch 4
RTD Offset
Ch 3
RTD Offset
Ch 2
RTD Offset
Ch 1
RTD Offset
Ch 0
Write 2
EDT command EDT command data
Write 3
1794-IRT8 Word/Bit Descriptions for Block Transfer Words
Word Decimal Bit Definition
Read Word 0 00…15 (00…17) Channel 0 Input data
Read Word 1 00…15 (00…17) Channel 1 Input data
Read Word 2 00…15 (00…17) Channel 2 Input data
Read Word 3 00…15 (00…17) Channel 3 Input data
Read Word 4 00…15 (00…17) Channel 4 Input data
Read Word 5 00…15 (00…17) Channel 5 Input data
Read Word 6 00…15 (00…17) Channel 6 Input data
Read Word 7 00…15 (00…17) Channel 7 Input data
Read Word 8 00…07 Underrange bits – These bits are set if the input signal is below the input
channel’s minimum range. Bit 00 corresponds to channel 0, bit 01
corresponds to channel 1, and so on.
08…15 (10…17) Overrange bits – These bits are set if 1), the input signal is above the
input channel’s maximum range, or 2), an open detector is detected. Bit 08
(10) corresponds to channel 0, bit 09 (11) corresponds to channel 1,
and so on.
1794-IRT8 Thermocouple/RTD/mV Input Module Read Words
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Size
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 Read/Write
Words
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