Rockwell Automation 1769-OF8V Compact Analog Output Module - Manual (Page 13)

Compact 1769-OF8V Analog Output Module 13
Publication 1769-IN066D-EN-P - June 2010
Input Data File
For each module, slot x, input data file words 3-10 contain the state of the module’s output
data (output data echo) file words 0-7. During normal operation, these input words represent
the analog values that the outputs are directed to by the control program.
• PF = Analog power fail.
• S = General status (over-range, under-range, or open-circuit).
• D = Open-circuit diagnostics.
• H = Output held bit.
• U = Under-range (or low-clamp exceeded) alarm.
• O = Over-range (or high-clamp exceeded) alarm.
Wo
rd
Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 PF S7 S6 S5 S4 S3 S2 S1 S0
1 D3 H3 U3 O3 D2 H2 U2 O2 D1 H1 U1 O1 D0 H0 U0 O0
2 D7 H7 U7 O7 D6 H6 U6 O6 D5 H5 U5 O5 D4 H4 U4 O4
3 Channel 0 Data Value
4 Channel 1 Data Value
5 Channel 2 Data Value
6 Channel 3 Data Value
7 Channel 4 Data Value
8 Channel 5 Data Value
9 Channel 6 Data Value
10 Channel 7 Data Value
IMPORTANT
The output module’s input data file reflects the analog output data echo of
the module, not necessarily the electrical state of the output terminals. It
does not reflect shorted or open outputs.