Yokogawa BT200 - Manual

Write Protection
Brain Communication
Field Guide
FEBRUARY 2006
The Brain EJX offers Hardware and
Software (Password) Write Protection for
all input parameters and Software Protection
for the zero-adjustment screw. These great
features allow the customer to protect the
settings in the transmitter and offer the
following features:
• Hardware Write Protection in the
form of a switch on the CPU
assembly board.
• Software Write Protection in the
form of a Password feature.
The Password feature can be
turned on & off.
Each transmitter can have a
unique password.
The Password can be any 8-digit
alphanumeric string
If you forget your password, an
override password is pre-
programmed into the transmitter.
• The Zero-adjustment screw can also
be Software protected.
Section 1.0 Hardware Write Protection
The Brain EJX transmitter has a Write
Protection (WR) switch located on the CPU
Assembly Board next to the Burn Out (BO)
switch. * (See Figure 1) When the WR
switch is in the “D” (Disabled) position; the
transmitter will not allow parameter changes
through the use of a handheld terminal or
some other communication method. When
the WR switch is in the “E” (Enable)
position, communication will be allowed.
* Refer to the exploded view of the transmitter in the
Instruction Manual (IM) for the location of the
CPU
Assembly Board within the EJX transmitter. Figure 1
FGP-111
Page 1 of 3