26
VIII. Instrument testing and other operations
8.1 Instrument test function
This instrument has rich testing functions, which is convenient for on-site
debugging and use. All the test functions of are implemented in the F parameter.
Please refer to Section 5.5 for how to access this parameter. The specific items
tested are as follows:
seri
al
numb
er
test item
show
operating procedure
F14
Nixie
tube
Led
display
[
test-dsp
]
Press [Enter], and the meter will automatically
test the LED and nixie tube display.
Scroll the display visually, and judge the
display failure.
F15
relay
delivery
outlet
[
o-000000
]
Press [Enter], enter the output port to be
tested, and you can test a single one.
You can also test more than one.
Enter [
o-00002
] if the output No.2 is tested; For
test No.123, enter [
o-000123
], then press
[Enter], the corresponding output port will act,
and the indicator light on the front panel will
light up at the same time, then press after the
test.
[Cancel] to exit the test.
F16
High
speed
pulse
input
port
[
tst-psul
]
Press [Enter] to display [
A00000
]. At this time,
input a signal at the pulse input port, and the
meter will display the measured pulse number.
Press after the test.
[Cancel] to exit the test.
F26
Internal
RAM
[
tst- r am
]
Press [Enter], and [
good ram
] will be displayed
if there is no fault.
Otherwise, [
bad ram
] is displayed.
F28
2#
communic
ation
port
[
s s i o --
]
The detection method is to short the two signal
lines RXD and TXD of RS232 communication, and the
display: [
ssio
1-
] indicates that RS232
communication is normal. Connect the capacitor
of 0.1uF between two signal lines A and B of RS485
communication, and the display: [
ssio -2
]
indicates that RS485 communication is normal.
Table 8.1 Table of Test Function Items
8.2 Instrument power-on self-test and fault display code
After the instrument is powered on, the relevant information of the instrument
