Rockwell Automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual User Manual
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Publication 1794-UM064B-EN-P - May 2014
Communicate With Your Module 29
1794-IR8 Word/Bit Descriptions
Word
Decimal Bit
Definition
Read Word 0
00…15 (00…17)
Reserved
Read Word 1
00…15 (00…17)
Channel 0 Input data
Read Word 2
00…15 (00…17)
Channel 1 Input data
Read Word 3
00…15 (00…17)
Channel 2 Input data
Read Word 4
00…15 (00…17)
Channel 3 Input data
Read Word 5
00…15 (00…17)
Channel 4 Input data
Read Word 6
00…15 (00…17)
Channel 5 Input data
Read Word 7
00…15 (00…17)
Channel 6 Input data
Read Word 8
00…15 (00…17)
Channel 7 Input data
Read Word 9
00…07
Underrange bits – these bits are set if the input signal is below the input
channel’s minimum range.
08 …15 (10…17)
Overrrange 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.
Read Word 10
00…01
Not used – set to 0
02
Reserved
03
Power Up bit – this bit is set (1) until configuration data is received by the
module.
04…06
Critical Error bits – If these bits are anything other than all zeroes, return
the module to the factory for repair.
07
Unused – set to 0
08 (10)
Calibration Out of Range bit – set to 1 if a reference signal is out of
range during calibration.
09 (11)
Calibration Done bit – set to 1 after an initiated calibration cycle is
complete.
10 (12)
Calibration Bad bit – set to 1 if the channel has not had a valid
calibration.
11…15 (13…17)
Unused – set to 0.