Yokogawa AXFA14G/C - Manual (Page 64)

IM 01E20F02-01E A-5
APPENDIX 1. APPLICATION, SETTING AND CHANGE OF BASIC PARAMETERS
A1.5 Setting the Integrator (IT)
Function Block
The Integrator function block output the flow totaliza-
tion.
(1)Setting the unit of totalization
1) Access the TIME_UNIT1 parameter in IT block and set the
Time unit corresponding IN_1. ( If there exists input to
IN_2, set the time unit in TIME_UNIT2 )
2) Access the OUT_RANGE parameter in IT block and set
the Flow unit in "Units Index".
FA0110.EPS
(2)Setting the direction of the totalization
Access the INTEG_OPTS parameter in IT block and set 0 or
1 to "Bit#2" or "Bit#3".
(Example1) Foward flow totalization
Bit#2=1
Bit#3=0
(Example2) Reverse flow totalization
Bit#2=0
Bit#3=1
(Example3) Differential flow totalization
Bit#2=1
Bit#3=1
FA0111.EPS
(3)Resetting or presetting TOTAL value
Reset totalization
Access the OP_CMD_INT parameter in IT block and set
Reset "1".
FA0112.EPS
Preset totalization
1) Access the MODE_BLK parameter in IT block and set O/S
or Man in "Target".
2) Access the OUT parameter in IT block and set preset
value in "Value".
3) Access the MODE_BLK parameter in IT block and set Auto
in "Target".
FA0113.EPS
A1.6 Setting the DI Function
Block
DI function blocks output limit switch signals received
from the transducer block.
Two DI blocks (DI1 and DI2) in each AXF have
independent parameters. Set up the parameters of each
DI 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
specifies the switch number of the transducer’s limit
switch to be input to DI (DI1: 2, DI2: 3) for the AXF.
(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 DI 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.
FA0114.EPS
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 6.3, “Simula-
tion Function.”