Hanna Instruments HI 504901 - Manual (Page 30)

59 58
TROUBLESHOOTING GUIDE
If troubles occur with the HI504901 device, follow the be-
low guidelines.
INTERFACE CONFIGURATION
• One (or more) device(s) is (are) not recognized by HI504901
interface during interface configuration with provided applica-
tion software HI504901SW on “test device” procedure.
Possible causes
Configuration parameters for serial com-
munication between HI504901 and
connected device(s) are not correct.
Remote device is turned off.
Wiring not correctly performed.
Solutions
Check if following parameters for serial com-
munication set with HI504901SW application
software (device model, baud rate, device ad-
dress - only for instruments connected to RS485
port) match with the ones defined on connected
instrument.
Turn on remote device.
Check if the remote device is correctly connected
to the HI504901 supervisor.
ERRORS PRIORITY
HI504901 is provided with some selftest procedures and
related “visual” LED indications when some of these tests
failed, in order to make the user understand the interface
related problem (see “Fault conditions and selftest proce-
dures” section).
Only two LEDs (green and red LEDs for SMS sending enable/
disable) are available to give information to the user about
active errors, and no more than one can be shown at the
same time. For this reason every error type has an associated
priority level, as described in the following table:
Error type Priority level
Power failure 4
EEPROM data corruption 3
Cellular error 2
Battery test failure 1
If more than one fault condition occurs simultaneously, then
errors with lower priority level are masked by error with high
one: only error indication with higher priority will be visible
by the user.
• During local interface configuration attempt the HI504901SW
software can not connect to the HI504901 interface.
Possible causes
Wiring not correctly performed.
HI504901 interface is busy (a remote
PC communication or remote interface
configuration is already in place, inter-
face is performing the polling procedure
for a not responding device, etc.).
HI504901 is in power failure status.
HI504901 interface is turned off.
Solutions
Check if the HI920010 cable is correctly con-
nected to the RS232 serial port on the PC and
to the auxiliary serial port on the HI504901
interface.
Try to connect later.
Restore mains power supply or wait for power
supply comes back.
Turn on the HI504901 interface.