MSB780(X) - User’s Guide
11 Troubleshooting
This section lists several most common symptoms of problems and actions that should be taken
in order to solve them.
Table 22: Troubleshooting
Troubleshooting
Problem Possible cause Solution
Barometer is not work-
ing, no signs of func-
tionality.
Incorrect power supply
Measure power supply voltage on termi-
nals PWR+, GND. Check, if measured
voltage is within range, refer to section 2.3
on page 12.
Check correct polarity of the power supply
applied.
Barometer is dam-
aged
Measure power supply current. Check,
if the current is within normal values, re-
fer to section 2.3 on page 12. If the
power supply current is zero, or too high,
please send the barometer for factory ser-
vice with a description of the problem.
No reply on RS-232
Incorrect serial line pa-
rameters - baud rate,
data bit count, parity...
Try different RS-232 parameters. All pos-
sible settings can be found in section 6.10
on page 38.
If you have version with display, check set-
tings of RS-232 through display.
If you have service cable available, you
can use Service serial port with fixed com-
munication settings to access the barom-
eter. Please refer to section 2.9 on page
15.
No reply on SDI-12
bus
Wrong SDI-12 ad-
dress
Use ?!<cr> SDI-12 command to deter-
mine barometer’s address. During this
command, no other device can be con-
nected to the SDI-12 bus. Change
the barometer current address using
aAb!<cr> command, please refer to sec-
tion 8.7 on page 74.
If you have version with display, you can
view the SDI-12 address using it, please
refer to section 7.7 on page 67.
You can also check current SDI-12 ad-
dress using user RS-232, or service serial
port.
Continued on next page
89
To Next Page
Loading...
