Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 26)

3. OPERATION
IM 01C50T01-01E 3-13
Process, Type:
Display Process Variable
name and Sensor Type in
turn.
Type, Wire:
Display Sensor Type and
the number of wires in
turn
Inhibit: Display none.
2) Disp Update
Update period of the display is
selected from Normal, Fast and
Slow.
NOTE
When the transmitter is used at temperatures
under -10
°
C, the response speed of the display
may become slow. It is recommended to set the
display speed to normal or slow in such case.
3.5.5 Write Protect
The write protect function is used to prevent unautho-
rized configuration data changes in the transmitter.
There are two ways to set this function; by hardwared
and by software, and hardware write protect function is
given priority.
Press Hot key and select “2. Wrt protect menu.”
Current status is shown in “1. Write protect.”
3.5.5.1 Write Protect Status
Press Hot key and select “2.Wrt protect menu.”
Current status is shown in “1.Write protect.”
Yes: Hardware or software write protect function
is activated. Under this status, any change
operation is denied with the message. [ In
write protect mode ] .
No : Neither protect function is activated.
3.5.5.2 Hardware Write Protect Function
Hardware write protect function is set up by Switch
(SW2) on the CPU assembly.
Pin position of SW2 Write Protect Status
Y
N
No
F0355.EPS
W P
Yes
Y
N
W P
SW2
SW2
SW2
Hardware Write Protect
SW1
Burnout output direction
upon hardware failure
CPU Assembly
Figure 3.3 SW2 setting
NOTE
1. Turn off the power supply before changing
the setting of SW2.
2. To change the SW2, it is necessary to
remove the LCD assembly with LCD model.
Refer to “ 6.3 Disassembly and Assembly” in
“YTA series Hardware Instruction Manual”
about the procedures.