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EN_User_documentation_Instructions_for_controlling_the_Logamatic_5000_controller_series_via_Modbus_TCP_I
P_20210203.docx | 10.02.2021
7. Additional information about converting values
to ASCII characters
If, for example, you want to convert the fault code (= display code, input register 60)
into ASCII characters, please proceed as follows:
1. Read the integer value from register 60.
2. Convert the integer into the binary format as described in chapter "Supple-
mentary information for setting or reading single bits in a Modbus controller".
3. Now split the binary format into the single bytes (= 8 bit). Each byte corre-
sponds to one letter. 4.
4. Now convert each byte back into an integer.
5. Look in an ASCII-Table
which letter is represented by the respective integer
Example:
You read the integer 12880 from the input register register 60 (fault code / display
code).
1. Convert the integer to binary format:
0011001001010000
b
2. Now divide the binary number into bytes:
00110010
b
, 01010000
b
3. Now convert the single bytes to decimal:
00110010
b
= 50
d
01010000
b
= 80
d
4. According to the ASCII table, the numbers can now be converted into char-
acters:
50
d
= „2“
80
d
= „P“
If you read a 12880 from input register 60, this corresponds to the error code "2P". If
you also read a 564 from input register 59 (additional code), for example, this corre-
sponds to the error message "Temperature rise boiler sensor too fast (>70K/min)".
Note: In addition to faults, operation codes are also displayed in the "Fault codes"
register (input register 60).
https://de.wikipedia.org/wiki/American_Standard_Code_for_Information_Inter-
change#ASCII-Tabelle
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