Unigas G258A Manual Of Installation - Use - Maintenance page 207

Modbus interface
The tables that follow in this chapter specify the addresses of the readable and writable words that the customer is able to access. The
customer may read and/or write the values using SCADA programs, PLCs, or similar.
The entries under Access have the following meanings:
R/O Read Only, value can only be read
R/W Read/Write, value can be read and written
The number of characters specified under Data type in the case of character strings includes the final \0.
Char10 means that the text is up to 9 characters long. The final \0 character is then added to this
User level
Address Access Data type
0x0000 R/O Float
0x0002 R/O Float
0x0004 R/O Float
0x0006 R/O Float
0x0008 R/W Float
0x000A R/W Float
0x1035 R/O Float
0x1043 R/O Float
0x1058 R/O Word
Parameter level
Address Access Data type
0x3000 R/W Float
0x3004 R/W Float
0x3006 R/W Float
0x300C R/W Float
0x3012 R/W Word
0x3016 R/W Float
0x3018 R/W Float
0x301A R/W Float
0x301C R/W Float
0x301E R/W Float
0x3020 R/W Float
0x3022 R/W Float
0x3080 R/W Float
0x3082 R/W Float
0x3084 R/W Float
0x3086 R/W Float
Signal reference Parameter
X1 Analog input InP1
X2 Analog input InP2
X3 Analog input InP2
WR Actual setpoint
SP1 Setpoint 1
SP2 (= dSP) Setpoint 2
--- Analog input InP3 (unfiltered)
--- Actual angular positioning
B1 Burner alarm
Signal reference Parameter
Pb1 Proportional range 1
dt Derivative action time
rt Integral action time
db Dead band
tt Controlling element running time
HYS1 Switch-on threshold
HYS2 Switch-off threshold down
HYS3 Switch-off threshold up
HYS4 Switch-on threshold (cooling)
HYS5 Switch-off threshold down (cooling)
HYS6 Switch-off threshold up (cooling)
q Reaction threshold
At1 Outside temperature 1
Ht2 Boiler temperature 1
At2 Outside temperature 2
Ht2 Boiler temperature 2
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