Yokogawa AXFA14G/C - Manual (Page 63)

IM 01E20C02-01E 6-34
6. PARAMETER DESCRIPTION
(11) Menu N: Loop Test Setting items
Menu N contains items that are relevant to loop testing.
[N10: Test Mode] Setting for loop test execution
Setting Function
No execution of loop testing.
Loop testing is started
Normal
Test
T0641.EPS
IMPORTANT
(1) Test output has priority over flow rate mea-
surement signals. When carrying out flow
rate measurements, be sure to always return
to “Normal”.
(2) Upon entry to the Test Mode, all output
terminals will simultaneously adopt test
condition.
(3) “Normal” will be restored when the power is
turned off or when 30 minutes have elapsed
since entry to Test Mode.
(4) In Test Mode, the warning 83: Fix Cur Wng
will be displayed as a warning message. (For
more details, refer to Section 6.5 Alarm
Functions.)
[N11: Test Output Value] Setting for test output
values
During loop testing, current output (4 to 20mA),
totalization, and pulse will be output in accordance
with this parameter’s setting, and values can be set
when “Test” has been selected for N10: Test Mode.
With multiple ranges or when performing forward/
reverse flow measurements, setting should be done
using a percentage of the maximum range.
[N30: Test DO] Setting for DO terminal condition
during testing
This parameter sets the condition of the DO terminal
during loop testing. Setting is possible when “Test”
has been selected for N10: Test Mode.
Setting Function
Open (Off)
Closed (On)
Pulse
T0642.EPS
DO terminal in Open (Off) condition
DO terminal in Closed (On) condition
Outputs pulses as were specified with Menu E.*
*: If the pulse scale is 0 pps or there is a pulse setting
error, the DO terminal is “Open (Off).”
[N31: Test DIO (O)] Setting for the DIO terminal
condition during testing
This parameter sets the condition of the DIO terminal
during loop testing. Setting is possible when “Test”
has been selected for N10: Test Mode.
Setting Function
Must be set when N32: Test DIO (I) is used
to display the condition of the DIO terminal.
DIO terminal in Open (Off) condition
DIO terminal in Closed (On) condition
Input mode
Open (Off)
Closed (On)
T0643.EPS
[N32: Test DIO (I)] Display for DIO terminal
condition during testing
This parameter is used to display the condition of the
DIO terminal. Setting is possible when “Test” has
been selected for N10: Test Mode.
Setting Function
DIO terminal in Open condition
DIO terminal in Short condition
Open
Short
T0644.EPS
(12) Menu P: Parameter Protection items
Menu P contains items that are relevant to write
protection and passwords.
[P10: Key Code] Parameter of the display restriction
This parameter restricts access to the Service Mode.
NOTE
Write Protect function
᭿ The parameters P20 through P23 are set
when using the write protect function. Specifi-
cally, this function responds to a hardware
switch or the setting of a software password,
and it protects parameters from being over-
written.
᭿ If the hardware switch is set to “Protect”, it will
not be possible to overwrite parameters;
furthermore, this condition will be maintained
until the switch is set to “Enable”.
᭿ For more details regarding hardware switch
settings, refer to Section 10.2.2: Setting of
Write Protect Switch.
[P20: Write Protect] Setting of password to release
the write protection function
This parameter is used to indicate whether or not write
protection is currently on.