LSI LASTEM E-Log – User’s manual
45
Every network device has its univocal address. A Modbus command includes the Modbus address
of the instrument which need to communicate with. Only this instrument will answer to the
command, even though all instrument receive it. All Modbus commands include check information
that assure the correct reception of the command. The base commands can ask to a
slave
to change
one value into one of its statuses or to return one or more values included into its registers.
E-Log looks like either as
master
or
slave
and implements part of the industrial Modbus protocol in
RTU version on serial port RS-232.
For more informations about Modbus protocol see INSTUM_00728_en manual reported on LSI
LASTEM products DVD (MW6501).
5.6.7.
Biral
Biral protocol allows the data acquisition from
present weather
Biral sensor. In order to decode the
received data of some parameters you must follow the following tables:
OVM - Obstruction to Vision Message
Value
Meaning
0
No obstruction
1
HZ Haze
2
FG Fog
SFM - Self-test and Monitoring
Subparameter
Format
Value
Meaning
Sensor Reset Flag
Ooo (fisrt digit)
0
Command "R?" received
1
Command "R?" not received after reset
Window Contamination
oOo (second digit)
0
Window contamination is less than 10%
1
Window contamination warning
2
Window contamination fault
3
Sensor input saturated
Other Self-Test errors
ooO (third digit)
0
No fault
1
Internal error / Other self test fault
2
Forward Scatter Receiver Flooded with Light
3
Back Scatter Receiver Flooded with Light
The values received as "X" (temporary values after initialization, error indication) are marked by
the value -999999.
5.6.8.
Data transmission through GPRS connection
GPRS data transmission system consists of the following parts:
One or more E-Log instruments;
One modem GPRS LSI LASTEM Mod. DEA718 or DEA718.1 for each E-log, respectively
connected through ELA110 or ELA110.1 cable; the modem SIM card must be able to GPRS
Summary of Contents for E-Log
Page 1: ...Cod INSTUM_00351_en E Log User s manual Updated on 09 18 2017...
Page 15: ...LSI LASTEM E Log User s manual 15...
Page 60: ...LSI LASTEM E Log User s manual 60 6 6 Mask of terminal board...
Page 61: ...LSI LASTEM E Log User s manual 61 6 7 Connection cables...
Page 62: ...LSI LASTEM E Log User s manual 62 6 8 Declaration of Conformity...
