Burkert Type 8056 User Manual
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RS232_485_ETP_MODBUS_BU_REV02.doc
3.2.12.
SETTING THE SET-POINT OF THE ML212
With this command it is possible to send the set-point value in % format to the ML202. If the value is positive, this is
intended as REMOTE set-point value and must be refreshed continuously. The maximum time between two refreshes it
is regulated by the same timer used to signal the deviation alarm condition and thus it is freely changeable. If the
value sent is negative, it is considered as LOCAL set-point value and in this case it is not necessary to refresh it
continuously. In any cases the regulator receives the absolute value of the number sent.
Command code: 14
Command format: ADDRESS TO
+ ADDRESS FROM
+ 0EH
+ 04H
+ 32 bits IEEE floating point containing the set-point value in %
+ CRC CHECKSUM
The same number is returned as answer by the ML212
3.2.13.
READING THE INTERNAL DATA-LOGGER DATA OF ML210 / 211 / 212
The data logger can be read one record at a time with this command. If we assign the value AAH to the byte
specifying the address (byte 0), the data logger is cancelled. If we request the address of a record not present in the
memory, the returned data has no sense. For this purpose we recommend starting from the request for record 0 and
to check the number of records present in the memory which is returned by the measuring device.
Command code : 02
Command format: ADDRESS TO
+ ADDRESS FROM
+ 02H
+ 01H
+ byte 0: index of the data logger data to read, AAH to cancel the entire content
+
CRC
CHECKSUM
Reply data format in the case where there are registrations present:
byte 0:
(8 bits integer) number of record requested
byte 1:
(8 bits integer) total number of records present in the memory
bytes 2-5: (32 bits long integer, MSB first) data saving time and date expressed in minutes starting from 01-01-
1992
bytes 6-9:
(32 bits long integer, MSB first) data counted +
bytes 10-13: (32 bits long integer, MSB first) data counted -
bytes 14-17: (32 bits single precision IEEE floating point, MSB first) portata in u.t.
bytes 18-20: (3 bytes ASCII) (3 bytes ASCII) counter measurement unit
byte 21:
(8 bits integer) number of decimal figures after the point for counter display
bytes 22-26: (5 bytes ASCII) flow rate t.u.
byte 27:
(8 bits integer) number of decimal figures after the point for flow rate
Reply data format in the case where registrations are NOT present or the data logger is disabled
byte 0:
(8 bits integer) requested record number
byte 1:
(8 bits integer) total number of records present in the memory
Reply data format in the case where the AAH cancellation code is sent:
byte 0:
(8 bits integer) AAH code.
NOTE: The time and date of sample collection is expressed in minutes starting from 01/01/1992. For conversion, see
the programming examples at the end of this manual.