Fisher FIELDVUE DVC6200f Instruction Manual page 196

Detailed Setup—DO Function Block
July 2013
Block Errors
Table 4‐71 lists conditions reported in the BLOCK_ERR [6] parameter. Conditions in italics are not applicable for the DO
block and are provided only for your reference.
Table 4‐71. BLOCK_ERR Conditions
Condition Number
0 Other (N/A)
1 Block Configuration Error ‐ SHED_OPT or CHANNEL set to 0 (uninitialized)
2 Link Configuration Error (N/A)
3 Simulate active ‐ Simulation is enabled and the block is using a simulated value in its execution.
4 Local Override ‐ Device in fault state. Actual mode LO.
Device Fault State Set ‐ DO block in fault state after FSTATE_TIME because of Bad status or IFS substatus on CAS_IN_D or Resource
5
block commanded fault state.
Device Needs Maintenance Soon ‐ Indicates a Maintenance PlantWeb Alert condition is active if Block Error Reporting is enabled. See
6
page 86.
Input failure/process variable has Bad status ‐ PV has bad status and Feature Select in the Resource block has the Out Readback bit set
7
or the transducer block mode is Out of Service.
8 Output failure ‐ PV has bad status or the transducer block mode is Out of Service.
9 Memory Failure (N/A)
10 Lost Static Data (N/A)
11 Lost NV Data (N/A)
12 Readback Check Failed (N/A)
13 Device Needs Maintenance Now ‐ Indicates Failed PlantWeb Alert condition is active if Block Error Reporting is enabled. See page 86.
14 Power Up ‐ This condition exists after power up until actual mode is not Out of Service.
15 Out of Service ‐ The block is in Out of Service (OOS) mode.
Action on Fault Detection
Fault State is caused by one of three sources: A status pertaining to CAS, A status pertaining to RCAS, or SET_FSTATE
[29] in the resource block. To implement Fault State, configure the following parameters:
IO_OPTS [14]: Determines the action OUT_D [9] will take upon a fault state. If the IO_OPTS [14] "Fault State to Value"
is not selected, then OUT_D [9] holds its last position when Fault State is set. If "Fault State to Value" is selected,
OUT_D [9] goes to the FSTATE_VAL_D [20] value when Fault State is set.
FSTATE_TIME [19]: The length of time, in seconds, that the DO block will wait to set Fault State. When
Fault State is set, the OUT_D [9] value goes to either the FSTATE_VAL_D [20] value or holds its last position, depending
on I/O_OPTS [14]. When the block has a target mode of CAS, a fault condition will be detected if the CAS_IN_D [17]
has a BAD status or an Initiate Fault State substatus is received from the upstream block.
FSTATE_VAL_D [20]: Determines the OUT_D [9] value if IO_OPTS [14] "Fault State to Value" is selected. The OUT_D
[9] value transitions to FSTATE_VAL_D [20] after FSTATE_TIME [19] elapses and the fault condition has not cleared.
Simulation
To support testing of the control strategy, you can enable the SIMULATE_D [17] parameter. Normally, the valve
position value and status used for READBACK_D [16] in the DO block reflect actual process values to the nearest 5%, as
provided by the transducer block. When the SIMULATE_D [17] parameter is enabled, value and status used for
READBACK_D [16] is supplied by the user manually. To enable simulation in the DO function block, the simulate
jumper must be installed. Refer to page 36 of the Installation section for information on the installation of this jumper.
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Condition Name and Description
Instruction Manual
D103412X012