User Manual

Compact IO™ Isolated HART Analog Input Module
U ser 's M a n u a l 0 300 21 5- 03 R ev. A
6-4
6.3.8 Low Process Alarm Flag Bits L0 to L3 (Word 6)
The low process alarm flag is set when the measured analog signal falls below the low
process alarm setpoint. The low process alarm setpoint is defined in Section 6.4 Module
Configuration.
6.3.9 Pad (Word 7)
Word 7 is not used and will always be zero. T his word is used to maintain 16 bit
alignment.
6.3.10 HART Data (Words 8 to 27)
This block of twenty word s contains the multiplexed HART data for all four channe ls.
1
6.3.11 Message Slave Control (Word 28)
The message slave control word controls how data is returned from the module after
sending a mes sage usin g output word s 2 through 23
1
.
6.3.12 Message Reply Size (Word 29)
The message repl y size indicates the number of bytes returned by the module after
sending a mes sage usin g output word s 2 through 23
1
.
6.3.13 Message Reply Buffer (Words 30…49)
After sending a message to the module, the response data for the message is stored in the
message reply buffer
1
.
6.3.14 Reserved (Words 50…71)
Reserved for future expansion.
1
For more details refer to Chapter 7