Table of Contents
Table 5-79. BLOCK_ERR Conditions
Condition
Condition Name and Description
Number
0
Other (N/A)
Block Configuration Error—CHANNEL set to 0 through 10
1
(uninitialized)
2
Link Configuration Error (N/A)
Simulate Active—Simulate is enabled. Output does not
3
reflect process conditions
4
Local Override (N/A)
5
Device Fault State Set (N/A)
6
Device Needs Maintenance Soon (N/A)
Input failure/process variable has Bad status—The
hardware is bad or the transducer block mode is Out of
7
Service
8
Output Failure (N/A)
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 (N/A)
Power Up—Set after power-up until actual mode is not Out of
14
Service
Out of Service—The actual mode is Out of Service (OOS).
15
The block is not being processed.
Block Errors
Table 5-79 lists conditions reported in the
BLOCK_ERR [6] parameter. Conditions in italics are
not applicable for the DI block and are provided only
for your reference.
Action on Failure
In case of hardware failure, FIELD_VAL_D [17], PV_D
[7], and OUT_D [8] change to a Bad status and the
BLOCK_ ERR [6] parameter shows Process Variable
has Bad Status. If the transducer block mode is Out of
Service, the status of FIELD_VAL_D [17], PV_D [7],
and OUT_D [8] is set to Bad:Out of Service.
Simulation
To support testing of the control strategy, you can
enable the SIMULATE_D [9] parameter. Normally the
measurement value and status used for
FIELD_VAL_D [17] in the DI block reflect actual
process values as provided by the transducer block.
When the SIMULATE_D [9] parameter is enabled,
value and status used for FIELD_VAL_D [17] is
supplied by the user manually. To enable simulation in
the DI function block, the simulate jumper must be
March 2006
DI Function Block
STANDARD DISCRETE INPUT
PROXIMITY DISCRETE INPUT
Configurable
Band
Figure 5-33. Proximity Discrete Input Compared to a
Standard Discrete Input
installed. For information on the installation of this
jumper, see the Installation section.
Note
When simulate discrete is active, the
output block no longer writes values
to the transducer block. If the Output
Blk Timeout period is exceeded, the
transducer block will move the valve to
the Zero Power Condition. The DI
block will also cause an Output
Timeout in the transducer block if
simulate discrete is active.
The SIMULATE_D [9] parameter has three
components:
D Simulate_D enable/disable determines whether
the function block will use the actual process value
and status, or Simulate Value and Simulate Status.
D Transducer Value and Status reflect the process
values provided by the transducer block.
D Simulate Value and Status may be entered by
the user when enable/disable is set to enabled.
To use simulate, first install the simulate jumper in the
terminal box, then set Simulate_D enable/disable to
enabled, then enter the desired values for Simulate
Value and Status.
DISCRETE INPUT
1
VALUE
0
DISCRETE INPUT
0
VALUE
1
0
5-161
5
Hide quick links:
Table of Contents
