Fisher FIELDVUE DVC6200f Instruction Manual page 208

Detailed Setup—DI Function Block
July 2013
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.
When SIMULATE_D [9] is enabled, the Simulate Active bit of the BLOCK_ERR [6] parameter is set (refer to the Block
Errors description). When the simulate jumper is installed, the Simulate Jumper bit of the transducer block parameter
SELFTEST_STATUS [78] is set.
Application Information
Figure 4‐32 compares the operation of a standard discrete input to a proximity discrete input. With the standard
discrete input, the discrete input changes state when the valve position passes a configurable trip point. This can be
used to indicate if the valve position is above or below the trip point.
Figure 4‐32. Proximity Discrete Input Compared to a Standard Discrete Input
STANDARD DISCRETE INPUT
PROXIMITY DISCRETE INPUT
Configurable
Band
With the proximity discrete input a configurable band can be established about a central point. Whenever the valve
position enters this configurable band, the discrete input changes state. A proximity discrete input is useful for
applications which require knowing the location of the valve when the valve is not near 0% or 100%.
DI Function Block Parameter List (table 4‐81)
D Read/Write Capability: RO - Read Only, RW - Read Write
D Mode: The block mode(s) required to write to the parameter
D Double indentation and shaded Index Number indicates sub‐parameter
206
DISCRETE
1
INPUT VALUE
0
DISCRETE
0
INPUT VALUE
1
0
Instruction Manual
D103412X012