Plantweb ™ Alarms; Max_Notify - Emerson Rosemount 8742C Reference Manual

Reference Manual
00809-X0100-4793, Rev CA
August 2004
Table 4-1. WRITE_LOCK Parameter
FEATURE_SEL FEATURE_SEL
HW_SEL bit SW_SEL bit
0 (off) 0 (off)
0 (off) 1 (on)
0 (off) 1 (on)
0 (off) 1 (on)
(1)
1 (on) 0 (off)
1 (on) 0 (off)
1 (on) 0 (off)
(1) The hardware and software write lock select bits are mutually exclusive and the hardware select has the highest priority. When the HW_SEL bit if set to 1
(on), the SW_SEL bit is automatically set to 0 (off) and is read only.

MAX_NOTIFY

™
PlantWeb Alarms
SECURITY SWITCH WRITE_LOCK
NA 1 (unlocked)
NA 1 (unlocked)
NA 2 (locked)
NA 2 (locked)
0 (unlocked) 1 (unlocked)
1 (locked) 2 (locked)
1 (locked) 2 (locked)
FEATURES_SEL
FEATURES_SEL is used to turn on any of the supported features. The default
setting of the Rosemount 8742C does not select any of these features.
Choose one of the supported features if any.
The MAX_NOTIFY parameter value is the maximum number of alert reports
that the resource can have sent without getting a confirmation, corresponding
to the amount of buffer space available for alert messages. The number can
be set lower, to control alert flooding, by adjusting the LIM_NOTIFY
parameter value. If LIM_NOTIFY is set to zero, then no alerts are reported.
The Resource Block will act as a coordinator for PlantWeb alarms.
There will be three alarm parameters (FAILED_ALARM,
MAINT_ALARM, and ADVISE_ALARM) which will contain
information regarding some of the device errors which are
detected by the transmitter software. There will be a
RECOMMENDED_ACTION parameter which will be used to
display the recommended action text for the highest priority alarm.
FAILED_ALARM will have the highest priority followed by MAINT_ALARM
and ADVISE_ALARM will be the lowest priority.
FAILED_ALARMS
A failure alarm indicates a failure within a device that will make the device or
some part of the device non-operational. This implies that the device is in
need of repair and must be fixed immediately. There are five parameters
associated with FAILED_ALARMS specifically, they are described below.
FAILED_ENABLED
This parameter contains a list of failures in the device which makes the
device non-operational that will cause an alarm to be sent. Below is a list
of the failures with the highest priority first.
1. Output Board Electronics Failure
2. Sensor Board Electronics Failure
3. Output Board NV Memory Failure
4. Coil Drive Open Circuit Failure
Rosemount 8742C
WRITE_LOCK
Read/Write DEFINE_WRITE_LOCK
Read only NA
Read/Write NA
Read/Write Physical
Read/Write Everything
Read only NA
Read only Physical
Read only Everything
Write access
to blocks
All
All
Function
Blocks only
None
All
Function
Blocks only
None
4-9