Rockwell Automation 1769-IF4FXOF2F Compact Combination Fast Analog I/O Module User Manual
Page 18
18 Compact Combination Fast Analog I/O Module
Publication 1769-IN081A-EN-P - February 2007
Input Data File
For each module, slot x, words 0…3 in the input data file contain the converted
value of the module’s analog input channels. Word 4 in the input data file contains
the time stamp value corresponding to the module's last input data sampling
period. Words 5 and 6 in the input data file contain status bits for the analog input
channels. Word 7 in the input data file contains status bits for the analog output
channels. Words 8 to 9 contain the directed values of the analog output channels
(output data echo).
The bits are defined as follows:
•
SGN = Sign bit in 2’s complement format.
•
Nu = Not Used. Bit set to 0.
•
SIx = General Status bit for input channels 0…3.
•
OIx = Over range flag bits for input channels 0…3.
•
UIx = Under range flag bits for input channels 0…3.
•
HIx = High Alarm flag bits for input channels 0…3.
•
LIx = Low Alarm flag bits for input channels 0…3.
•
SOx = General Status bit for output channels 0…1.
•
OOx = Over range flag bits for output channels 0…1.
•
UOx = Under range flag bits for output channels 0…1.
Word/Bit 15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Word 0
SGN
Analog Read (Input) Data Value Channel 0
0
Word 1
SGN
Analog Read (Input) Data Value Channel 1
0
Word 2
SGN
Analog Read (Input) Data Value Channel 2
0
Word 3
SGN
Analog Read (Input) Data Value Channel 3
0
Word 4
0
Time Stamp Value
Word 5
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
Nu
SI3
SI2
SI1
SI0
Word 6
LI3
HI3
UI3
OI3
LI2
HI2
UI2
OI2
LI1
HI1
UI1
OI1
LI0
HI0
UI0
OI0
Word 7
Nu
Nu
UO1 OO1 Nu
Nu
UO0 OO0 Nu
Nu
Nu
Nu
Nu
Nu
SO1 SO0
Word 8
SGN
Output Data Loopback/Echo Channel 0
0
0
Word 9
SGN
Output Data Loopback/Echo Channel 1
0
0