YOKOGAWA AXFA14G User Manual

<6. Operation>
60
IM 01E20A01-01EN
6.3 Write Protect Switch
Bysettingthewriteprotectfunctionto“Protect”itis
possible to prevent the overwriting of parameters.
Write protection can be carried out using either the
hardware switch on the CPU board (i.e., Switch 2) (See
Figure 6.3.2) or software parameter settings. If either
oftheseitemsissetto“Protect,”theoverwritingof
parameters will be prohibited.
NOTE
• Ifthehardwareswitchissetto“Protect,”itwillnot
be possible to overwrite parameters; furthermore,
this condition will be maintained until the switch is
setto“Enable.”
• Inthecaseofeldbuscommunicationtype,setting
of the hardware switch (Enable or Protect) is
ineffective and write protection can be carried out
only by software parameter settings.
For more details regarding usage of the write protect
function and the software’s parameter switches, refer to
“ParameterDescription”oftheappropriatemanualwhich
can be downloaded from our website.
6.3.1 Setting Hardware Switch of Integral
Magnetic Flowmeter or AXFA14 Re-
mote Converter
IMPORTANT
To preserve the safety, do not touch the electrical
circuit and the cables except the setting switches.
(1) Turn off the power.
(2) Loosen cover locking screw 1 clockwise using a
hexagonal wrench (nominal size 3) to unlock the
cover. (Upon shipment from the manufacturing
plant,thecoverislocked.)Holdtheowmeterwith
your hand and remove the cover by turning it in the
direction of the arrow as shown below.
F0608.ai
Cover locking
screws
1 2
Figure 6.3.1 Removing the Display Cover for Integral
Flowmeter and AXFA14 Remote Converter
(3) Set the switches. There are two switches (See Figure
6.3.2). One is for burnout setting and the other for
write protect setting, located adjacent to each other.
(4) Taking care not to entangle the cables, install the
covertotheowmeterbyturningitinthebackward
direction of the arrow as shown Figure 6.3.1.
(5) Tighten cover locking screw 1 counterclockwise
using a hexagonal wrench (nominal size 3) to lock the
cover.
Switch 1
Low High
Switch 2
Enable Protect
F0609.ai
2 Burnout setting switch
1 Write protect setting switch
Figure6.3.2 SwitchCongurationforIntegralFlowmeter
and AXFA14 Remote Converter
NOTE
Ontheamplier’sCPUboard,theburnoutsetting
switch (i.e., Switch 1) and the write protect switch
(i.e., Switch 2) are located adjacent to each other.
Accordingly, special care should be taken when
making switch settings.
6.3.2 Setting Hardware Switch of AXFA11
Remote Converter
IMPORTANT
To preserve the safety, do not touch the electrical
circuit and the cables except the setting switches.
(1) Turn off the power.
(2) While supporting the front of the cover with your hand,
iptheconnectingscrewprotectivecoverover,and
remove the four connecting screws.
(3) Loosentheamplierassembly’stwoscrewswhile
supporting it with your hand (See Figure 6.3.3).

YOKOGAWA AXFA14G Specifications

General

Brand	YOKOGAWA
Model	AXFA14G
Category	Measuring Instruments
Language	English