Flowserve MX HART Field Unit - Manual (Page 38)

MX/QX HART Field Unit FCD LMENIM2340-00 – 1/14
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the time when the Acknowledge was performed. If no event is latched the current Configuration Chagned Counter, Field
Device Status, and Command 48 response data shall be sent repeatedly with a period of ‘Maximum Update Period’.
The event message is aggregated with the default burst message. The event message is sent to both masters (in two
consecutive burst cycles, like any burst message. HCF_SPEC-151, 6.10.2).
The Event Notification De-bounce Interval is used to prevent spurious event notifications, and defines the amount of
time that a condition must persist before the Event Notification is sent out.
3.5.4.3 Update Periods
The host application or control system may set the update periods for the Limitorque MX/QX field device to the
following allowed values: 0.5, 1.0, 2.0, 4.0, 8.0, 16.0, 32.0, and 60-3600 seconds.
If a setting is requested that is different from those indicated above, the HART device must correct the setting and send
response code 8 “Update Times Adjusted” in its response message. The update time returned in the response message
will reflect the adjusted update time the device is using.
3.6 Device-Specific Commands
3.6.1 Remote Configuration Mode
Some device-specific commands require the unit be “In Remote” (Remote-Stop-Local Knob is in the Remote position)
and/or “Remote Configuration Mode”. If those commands are issued when the unit is not “In Remote” and/or “Remote
Configuration Mode”, response code 16 “Access Restricted” will be returned.
Remote Configuration Mode can be entered or exited using the button located at the bottom of the configuration menu.
For example, at the bottom of the ESD Settings configuration menu:
Figure 3.8 – Remote Configuration Modes (3 figures)
When the button is clicked, it will provide a new window that gives you the current status of Remote Configuration
Mode and asks if you wish to change it: