Reference Manual
00809-0100-4793, Rev CA
August 2004
Rosemount 8742C
www.rosemount.com
Appendix C
Resource Block
Parameters and Descriptions . . . . . . . . . . . . . . . . . . . . . . page C-1
Resource Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . page C-5
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page C-5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page C-6
This section contains information on the resource block for the
Rosemount 8742C Magnetic Flowmeter Transmitter. Descriptions of all
resource block parameters, errors, and diagnostics are included. Also, the
modes, alarm detection, status handling, virtual communication relationships
(VCRs), and troubleshooting are discussed.
Definition
The resource block defines the physical resources of the device, such as
measurement and memory. The resource block also handles functionality,
such as shed times, that is common across multiple blocks. The block has no
linkable inputs or outputs, and it performs memory-level diagnostics.
PARAMETERS AND
DESCRIPTIONS
Table C-1 lists all of the configurable parameters of the resource block,
including the descriptions and index numbers for each parameter. Newer
software revisions have added functionality and some index numbers have
changed. To determine the software revision of a transmitter, check the
parameter SOFTWARE_REVISION_MAJOR or open the cover on the
electronics side of the transmitter. The most recent transmitters have a label
on the electronic board stack.
Table C-1. Resource Block
Parameters
Index Number
Parameter
Rev 5
Description
ST_REV
01
The revision level of the static data associated with the function block. The revision
value will be incremented each time a static parameter value in the block is
changed.
TAG_DESC
02
The user description of the intended application of the block.
STRATEGY
03
The strategy field can be used to identify grouping of blocks. These data are not
checked or processed by the block.
ALERT_KEY
04
ALERT_KEY shows the identification number of the plant unit. This information
may be used in the host for sorting alarms, etc.
MODE_BLK
05
The actual, target, permitted, and normal modes of the block:
Target: The mode to “go to”
Actual: The mode the “block is currently in”
Permitted: Allowed modes that the target mode may take on
Normal: Most common mode for the actual mode
BLOCK_ERR
06
This parameter reflects the error status of the hardware or software components
associated with a block. It is a bit string, so multiple errors may be shown.
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