Yokogawa AXFA14G/C - Manual (Page 11)

IM 01E20F12-01E 3-4
3. GETTING STARTED
3.5 Setting of Write Protect
Switch
A write protection is a function to forbid changing of
parameters. It is possible to set the software write
protection by parameter setup or the hardware write
protection by the hardware slide switch. In case of the
setting up by parameters, it can set up in
WRITE_LOCKING. When WRITE_LOCKING is “0:
Lock”, the status of write protect becomes protected
mode. And when WRITE_LOCKING is “2457:
Disabled”, the status becomes disable mode.
In case of the setting up by hardware switch, it can set
up on the No.1 switch of SW101. When the switch is
turned on, the status becomes protected mode, and
when the switch is turned off, the status becomes
disable mode. The state of the hardware write-protec-
tion switch can be checked with the parameter
“HW_WRITE_PROTECTION.” As the mentioned
above, write protection is available by the setting either
of software protection or hardware protection, one of
them is set to protect mode, the status becomes
protected mode.
Table 3.4 Write Protect
Setting of
Hardware Write Protect SW
Displaying of
HW_WRITE_PROTECTION
Setting of
WRITE_LOCKING
State of Protect
Protect State
Enable 0:Unprotected 0: Lock Protect
Enable 0:Unprotected 2457: Disabled Enable
Protect 1:Protected 0: Lock Protect
Protect 1:Protected 2457: Disabled Protect
T0304E.EPS
2 1
O N
2 1
O N
Write Protect Disable Write Protect Enable
WRITE_PROTECT WRITE_PROTECT
SIMULATE SIMULATE
SW101 SW101
F0304.eps
Figure 3.4 Write Protection Switch
WARNING
When opening the cover, wait for more than 10
minutes after turning off the power. Furthermore,
opening of the cover must also be carried out by
the trained personnel having knowledge of safety
standard.
IMPORTANT
To preserve the safety, do not touch the electri-
cal circuit and the cables except the setting
switches.