General output status bits (so0 and so1), High clamp (over-range) flag bits (oo0 and oo1), Low clamp (under-range) flag bits (uo0 and uo1) – Rockwell Automation 1769-IF4FXOF2F Compact Combination Fast Analog I/O Module User Manual

Page 38

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Publication 1769-UM019A-EN-P - October 2008

Chapter 3 Module Data, Status, and Channel Configuration

General Output Status Bits (SO0 and SO1)

Word 7, bits 0 and 1 contain the general operational status bits for
output channels 0 and 1. When set (1), these bits indicate an
output-clamp range error associated with that channel. The over- and
under-range bits are logically ORed to the appropriate general status
bit.

High Clamp (over-range) Flag Bits (OO0 and OO1)

High clamp (over-range) bits for output channels 0 and 1 are
contained in Word 7, bits 8 and 12. When set (1), these bits indicate
an output value sent to the module is over the user-configured high
clamp value for the output channel. The module clamps the analog
output signal at the high clamp value. These bits are automatically
reset (0) by the module when the high clamp condition clears, unless
the channel’s clamp alarm bits are latched. If the channel’s clamp
alarm bits are latched, a set (1) high clamp flag bit clears via the
corresponding Cancel High Clamp Latch bit in your output data file.

Low Clamp (under-range) Flag Bits (UO0 and UO1)

Low clamp (under-range) bits for output channels 0 and 1 are
contained in Word 7, bits 9 and 13. When set, these bits indicate an
output value sent to the module is under the user-configured low
clamp value for the output channel. The module clamps the analog
output signal at the low clamp value. These bits are automatically
reset (0) by the module when the low clamp condition clears, unless
the channel’s clamp alarm bits are latched. If the channel’s clamp
alarm bits are latched, a set (1) low clamp flag bit clears via the
corresponding Cancel Low Clamp Latch bit in your output data file.

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