<3. Parameter Setting>
3-13
IM 01C50T03-02EN
(1) Checking the status
You can check the current write protection state
using the following two methods. However, you can
check the protection state of the entire temperature
transmitter. You cannot check the three setting
states individually as described above.
Check by parameters:
Parameter Value
Description
G 4 0 : W R T
PROTECT
NO
Not protected
(Parameter writing enabled)
YES Protected
(Parameter writing disabled)
Checking by integral indicator:
If the integral indicator is mounted, you can check
the write protection state by reading an indication of
a key symbol as shown below.
Not protected
Protected
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(2) Setting the password and write protection
The following explains the BRAIN parameter
settings.
When you set a password, write protection must be
canceled. Check the write protection state using the
method described in (1) “Confirmation of state”. If
the system is protected, release the protection first.
Write the desired password in the following
parameter.
Parameter
Password
Remarks
G42:NEW
PASSWORD
Eight blank
characters
This is a special
password. If this password
is set, write protection
is always canceled, and
the protection status is
maintained until another
password is set.
Other than
the above
Write protection is
enabled. The protection
is maintained until the
password, that has
been set by “G41:WRT
ENABLE” parameter, is
written.
This set password is only displayed on the
confirmation screen immediately after it is set.
After that, the eight blank characters are always
displayed during normal parameter reading.
Confirmation screen
immediately setting
Normal display
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PARAM
G42:NEW PASSWORD
G43:SOFT SEAL
KEEP
G60:SELF CHECK
GOOD
DATA
DIAG
ESC
SET
G42:NEW PASSWORD
ABCDEFGH
NO
OK
The password can contain the following characters
and symbols only.
• Uppercase (A to Z) and lowercase (a to z)
alphabet characters
• Numbers (0 to 9)
• Blank
• Symbols (15 types shown at right) / . - , + * ) ( ‘ &
% $ # “ !
(3) Releasing write protection
The following explains how to cancel write
protection if it has been set by the BRAIN
parameter. The write protection cancel state
continues for 10 minutes only. However, if the
parameter is written via BRAIN protocol, it will
continue for 10 more minutes from that point.
Write the desired password in the following
parameter.
Parameter
Password
G41:WRT
ENABLE
Write the same password as that
specified by “G42:NEW PASSWORD”
parameter.
Immediately after writing the password in the above
parameter, the confirmation message is displayed
on the screen. You can check the success or failure
of protection release by reading this message.
Message
Description
Released
Protection was canceled successfully
Rejected
Protection failed to cancel (due to incorrect
password)
Blank
Protection has already been canceled,
or the password contains eight blank
characters.
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SET
G41:WRT ENABLE
Rejected
NO
OK
Confirmation screen example
