Yokogawa digitalYEWFLO (DY-FF) - Manual (Page 80)

<APPENDIX 2. APPLICATION, SETTING AND CHANGE OF BASIC PARAMETERS>
A2-6
IM 01F06F00-01EN
A2.5 Setting the DI Function
Blocks
DI function blocks output limit switch signals
received from the transducer block.
Two DI blocks (DI1 and DI2) in each
digitalYEWFLO have independent parameters.
Set up the parameters of each AI block you use,
individually as necessary. The following shows the
DI1 setting procedure as an example.
(1) Setting the channel
The CHANNEL parameter of the DI block, which
specifi es the switch number of the transducer’s
limit switch to be input to DI (DI1: 3, DI2: 4) for a
digitalYEWFLO.
(2) Setting the damping time constant
Access the PV_FTIME parameter and set the
damping time constant (in units of seconds).
(3) Simulation
Perform simulation of each AI function block by
setting the desired value and status of the input to
the block. Access the SIMULATE_D parameter and
change the values of its elements as follows.
FA0212.ai
Access the SIMULATE_D Value element and
set the desired input value.
Access the SIMULATE_D Status element and
set the desired status code.
Change value of the En/Disable element of
SIMULATE_D.
1: Disabled
2: Active
REMOTE LOOP TEST SWITCH is written to
SIM_ENABLE_MSG (index 1044) parameter of
the resource block.
The DI block uses SIMULATE_D Status and
SIMULATE_D Value in the SIMULATE_D
parameter as its input status and value when
simulation is active, or uses Transducer Status
and Transducer Value in SIMULATE_D as its input
status and value when simulation is disabled. Refer
to Section 7.3 “Simulation Function.”