Rosemount OCX 8800, Instruction Manual

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Instruction Manual
IM-106-880, Rev 2.1
April 2017
OCX 8800
7-59
Figure 7-27. Input Selector Function Block Schematic
IN_1
IN_2
IN_3
IN_4
DISABLE_1
DISABLE_2
DISABLE_3
DISABLE_4
OP_SELECT
OUT
SELECTOR
Block Errors
Table 7-34 lists the conditions reported in the BLOCK_ERR parameter.
Conditions in
italics are inactive for the ISEL block and are listed for reference
only.
Table 7-34. Block Error
Conditions
0 Other: The output has a quality of uncertain.
1 Block Configuration Error
2 Link Configuration Error
3 Simulate Active
4 Local Override: The actual mode is LO.
5 Device Fault State Set
6 Device Needs Maintenance Soon
7 Input Failure/Process Variable has Bad Status: One of the inputs is Bad or not
connected.
8 Output Failure: The output has the quality of Bad.
9 Memory Failure: A memory failure has occurred in FLASH, RAM, or EEROM
memory.
10 Lost Static Data
11 Lost NV Data
12 Readback Check Failed
13 Device Needs Maintenance Now
14 Power Up: The device w as just pow ered-up.
15 Out of Service: The actual mode is out of service.
Modes
The ISEL function block supports three modes of operation as defined by the
MODE_BLK parameter:
•
Manual (Man) The block output (OUT) may be set manually.
•
Automatic (Auto) OUT reflects the selected value.
•
Out of Service (O/S) The block is not processed. The BLOCK_ERR
parameter shows Out of Service. In this mode, changes caNn be made
to all configurable parameters. The target mode of a block may be
restricted to one or more of the supported modes.
Alarm Detection
A block alarm will be generated whenever the BLOCK_ERR has an error bit
set. The types of block error for the ISEL block are defined above.
Condition
Number
Condition Name and Description
3
9
9
3
0
0
2
5
Selection
Algorithm
SEL_TYPE
MIN_GOOD