Tabla de contenido
Idiomas disponibles
Idiomas disponibles
Appendix A: Modbus communication
CAUTION
This pressure relief device has a default address equal to 159 and its
address can be changed from 159 to 144.
It is not possible to give an address outside of range from 144 to 159.
The address can be modified from default value by dipswitches on
electronic board.
Addressing
DIP SWITCHES
ADDRESS
1
159
OFF
158
OFF
157
OFF
156
OFF
155
OFF
154
OFF
153
OFF
152
OFF
151
ON
150
ON
149
ON
148
ON
147
ON
146
ON
145
ON
144
ON
Table 1
24
2
3
4
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
ELECTRONIC PRESSURE RELIEF DEVICE e170SC
Registers tables
In the tables 2-3 are showed the visible via Modbus (RTU)
registers.
Main register Table
Register Type
R/W
Function
0X2000
W
R
Board Inputs
0X2001
W
R/W
Board outputs
0X2002
W
R
Pressure probe Value
0X2003
W
R
Trimmer Value
0X2004
W
R
Number of relay operations
0X2005
W
R
Board minutes ON
0X2006
W
R
Board days ON
0X2007
W
R
Level sensor maximum
Value of the current day
0X2013
W
R
Value of the current day
Table 2
Memory registers
Maximum values are stored and saved from register
0x2100 to register 0x215F.
The last four weeks data (from current day) are stored and
saved daily, at the beginning of the 5th week the maximum
and minimum values of the entire older week are stored
and saved in 0x211C register and so on. Summarizing, in
this table (3) the data are collected as follows:
1. In the first 28 rows are saved max of the latest 28 days;
2. In the remaining rows are saved max of the oldest 68 weeks.
Register Type
R/W
Function
0X2100
W
R
Level Sensor Maximum Value Day -1
0X2101
W
R
Level Sensor Maximum Value Day -2
0X2102
W
R
Level Sensor Maximum Value Day -3
0X2103
W
R
Level Sensor Maximum Value Day -4
0X2104
W
R
Level Sensor Maximum Value Day -5
0X2105
W
R
Level Sensor Maximum Value Day -6
....
....
....
...................................................
0X2118
W
R
Level Sensor Maximum Value Day -25
0X2119
W
R
Level Sensor Maximum Value Day -26
0X211A
W
R
Level Sensor Maximum Value Day -27
0X211B
W
R
Level Sensor Maximum Value Day -28
0X211C
W
R
Level Sensor Maximum Value Day -5
0X211D
W
R
Level Sensor Maximum Value Day -6
....
....
....
...................................................
0X215C
W
R
Level Sensor Maximum Value Day -69
0X215D
W
R
Level Sensor Maximum Value Day -70
0X215E
W
R
Level Sensor Maximum Value Day -71
0X215F
W
R
Level Sensor Maximum Value Day -72
Table 3
Tabla de contenido
