<3. Parameter Setting>
3-14
IM 01C50T03-02EN
NOTE
If you wish to set the protection state back to the
protection state, do not write the parameter for
10 minutes and wait until the protection state is
set again. However, if a new password is set for
“G42:NEW PASSWORD”, the protection state is
set immediately.
NOTE
If an incorrect password is entered in “G41:WRT
ENABLE”, the state that existed before the
password was entered is maintained (the
protection is not released from the protected state,
and the canceled state is maintained if it has
already been released).
NOTE
If “G40:WRT PROTECT” remains YES (or the key
mark of the integral indicator remains displayed)
even though “Released” is displayed on the
confirmation screen, protection has been set by
the slide switch of the MAIN assembly or by the
integral indicator. It will be necessary to release
protection using each method separately.
NOTE
If you forget your password, you can temporarily
cancel the write protection function using the
“Joker” password. For the “Joker” password,
contact Yokogawa sales office.
(4) Software Seal
If the write protection function is canceled by using
the “Joker” password, it can be identified by the
Software Seal function.
You can check the Software Seal state by reading
the following parameter.
Parameter
Value
Description
G43:SOFT
SEAL
KEEP
The seal is not broken (“Joker”
password is not used)
BREAK The seal is broken (“Joker”
password is used)
NOTE
The broken software seal state is maintained
even after the unprotected state using the “Joker”
password ends. To return to the KEEP state again,
it is necessary to cancel protection by using the
password that was set G42:NEW PASSWORD.
3.2.12 Input Adjustment
The YTA temperature transmitter is adjusted
prior to factory shipment based on the standard
characteristics of sensors, and the process
variables are output with these characteristics.
The input adjustment is made to correct both
the shipping characteristics of the temperature
transmitter and the internal calculation value of
input signals. (See Figure 3.4.) Even when the input
adjustment is made, the characteristics that exist
during factory shipment are retained. Therefore,
the characteristics can be restored during factory
shipment.
Input
Output
Output
Lower trim
Image of 1-point adjustment
Input
Lower trim
Upper trim
Image of 2-point adjustment
F0312.ai
Figure 3.4
Image of input adjustment
