User Manual

34 Rockwell Automation Publication 1756-UM005B-EN-P - January 2013
Chapter 3 Module Features
Latching of Alarms
The latching feature allows the high-speed analog I/O module to latch an alarm
in the set position once it has been triggered, even if the condition causing the
alarm to occur disappears. Once an alarm is latched, you must unlatch it via the
Logix Designer application or a message instruction.
To see how to unlatch an alarm, see page 77
.
Alarm Disable
The Logix Designer application provides the option to disable all of the process
alarms available on the module, as described on pages 44
, 45, and 48.
To see how to disable the process alarms, see page 77
.
Data Format
Your high-speed analog I/O module multicasts floating point data. Floating
point data uses a 32-bit IEEE format. Integer mode is not available on the
ControlLogix high-speed analog I/O module.
Module Inhibiting
Module inhibiting provides the option to close the connection between a
high-speed analog I/O module and its owner-controller. This feature stops the
data transfer between the owner-controller and a configured module. The
connection is reopened when the module is uninhibited.
IMPORTANT
Whenever you inhibit a high-speed analog I/O module, all outputs change to
the state configured for the Program mode.
For example, if the module is configured so that the state of the outputs go to
zero during Program mode, whenever the module is inhibited, the outputs go
to zero.