4900002277 J22 TDLAS Gas Analyzer
110 SpectraSensors, Inc.
For output signals
For access
Error Possible Causes Solution
Signal output outside the
valid range
Main electronics module is
defective.
Order spare part →
137.
Device shows correct
value on local display, but
signal output is incorrect,
though in the valid range.
Configuration error Check and correct the
parameter configuration.
Device measures incor-
rectly.
Configuration error or
device is operated outside
the application.
1. Check and correct
parameter configura-
tion.
2. Observe limit values
specified in the
"Technical Data".
Error Possible Causes Solution
No write access to param-
eters
Hardware write protection
enabled
Set the write protection
switch on main electron-
ics module to the Off posi-
tion → 108
Current user role has lim-
ited access authorization
1. Check user role →
39.
2. Enter correct custo-
mer-specific access
code → 39.
No connection via Modbus
RS485
Modbus RS485 cable
incorrectly terminated
Check terminating resis-
tor → 23.
Incorrect settings for the
communication interface
Check the Modbus RS485
configuration → 93.
Not connecting to Web
server
Web server disabled —
Incorrect setting for the
Ethernet
interface of the computer
1. Check the properties of
the Internet protocol
(TCP/IP) → 42.
2. Check the network set-
tings with the IT mana-
ger.
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