Emerson Rosemount 848T, Reference Manual, Page: 34 / 136

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Reference Manual
00809-0100-4697, Rev GA
Section 3: Configuration
November 2014
Configuration
07 RS_STATE State of the function block application state machine. For a list of enumeration
values, see FF-890.
08 TEST_RW Read/write test parameter - used only for conformance testing.
09 DD_RESOURCE String identifying the tag of the resource which contains the Device Description for
the resource.
10 MANUFAC_ID Manufacturer identification number - used by an interface device to locate the DD
file for the resource.
11 DEV_TYPE Manufacturer's model number associated with the resource - used by interface
devices to locate the DD file for the resource.
12 DEV_REV Manufacturer revision number associated with the resource - used by an interface
device to locate the DD file for the resource.
13 DD_REV Revision of the DD associated with the resource - used by the interface device to
locate the DD file for the resource.
14 GRANT_DENY Options for controlling access of host computer and local control panels to
operating, tuning and alarm parameters of the block.
15 HARD_TYPES The types of hardware available as channel numbers. The supported hardware
type is: SCALAR_INPUT
16 RESTART Allows a manual restart to be initiated.
1) Run: This is passive state of this parameter.
2) Restart resource: To clear up the problems like garbage collection.
3) Restart with defaults: reset all configurable function block application objects to
their initial value i.e. their value before any configuration was done by the user.
This will also remove appended serial numbers of function block tags
4) Restart processor: provides a way to hit the reset button on the processor
associated with the resource.
5) Restart to append serial number: Appends serial number to function block tags.
11) Restart default blocks: defaults manufacturer pre-instantiated blocks.
17 FEATURES Used to show supported resource block options. The supported features are:
SOFT_WRITE_LOCK_SUPPORT, HARD_WRITE_LOCK_SUPPORT, REPORTS,
UNICODE, MULTI_BIT_ALARM_SUPPORT and FB_ACTION_RESTART_RELINK
18 FEATURE_SEL Used to select resource block options.
19 CYCLE_TYPE Identifies the block execution methods available for this resource. The supported
cycle types are: SCHEDULED, and COMPLETION_OF_BLOCK_EXECUTION
20 CYCLE_SEL Used to select the block execution method for this resource.
21 MIN_CYCLE_T Time duration of the shortest cycle interval of which the resource is capable.
22 MEMORY_SIZE Available configuration memory in the empty resource. To be checked before
attempting a download.
23 NV_CYCLE_T Minimum time interval specified by the manufacturer for writing copies of NV
parameters to non-volatile memory. Zero means it will never be automatically
copied. At the end of NV_CYCLE_T, only those parameters which have changed
need to be updated in NVRAM.
24 FREE_SPACE Percent of memory available for further configuration. Zero in preconfigured
resource.
25 FREE_TIME Percent of the block processing time that is free to process additional blocks.
26 SHED_RCAS Time duration at which to give up on computer writes to function block RCas
locations. Shed from RCas will never happen when SHED_RCAS = 0.
27 SHED_ROUT Time duration at which to give up on computer writes to function block ROut
locations. Shed from ROut will never happen when SHED_ROUT = 0.
28 FAULT_STATE Condition set by loss of communication to an output block, fault promoted to an
output block or physical contact. When FAIL_SAFE condition is set, then output
function blocks will perform their FAIL_SAFE actions.
29 SET_FSTATE Allows the FAIL_SAFE condition to be manually initiated by selecting Set.
30 CLR_FSTATE Writing a Clear to this parameter will clear the device FAIL_SAFE if the field
condition has cleared.
31 MAX_NOTIFY Maximum number of unconfirmed notify messages possible.
Table 3-2. Resource Block Parameters
Number Parameter Description