Burkert Type 8056 - Manual (Page 72)

- 72 - RS232_485_ETP_MODBUS_BU_REV02.doc
5.6. PARAMETER SETTINGS
MODBUS PARAMETERS SETTINGS FOR THE CONVERTER:
• Menu «7-Communication», function - «Parity»: set the control of the parity for the byte frame in MODBUS
communication. This function affect all the serial port that communicate with MODBUS protocol. The possible
value are: EVEN (default), NONE and ODD.
• Menu «7-Communication», function - «RS485 pr.»: the function select protocol type for the RS 485 serial
port. Select the value MODBUS.
• Menu «7-Communication», function - «RS232 pr.»: the function select protocol type for the RS 232 serial
port. Select the value MODBUS.
Refer to the relative section of the serial port selected for the other type of parameter like port speed etc.
5.7. STANDARD FUNCTIONS
For the MODBUS protocol, the converter ha the function of SLAVE device. The MASTER of the MODBUS network see
the Converter as a set of register of 1 bit or 16 bit.
The data are supplied with list of fixed address grouped in tables with different length.
• FUNCTION 01, send of Status Batch. This command return variables of bit type.
Addresses(Hex format) Bit Description
0000 1 = batch process is running, 0 = batch process
correctly terminated
0001 1 = batch process is suspended, 0 = batch
process is running or terminated
• FUNCTION 03, send process data, data logger data, data logger events and batch memory. This
command return 16 bit variables that are linked to form floating-point (float) o 32 bit long-integer
(long) variables type. The high side of the word (MSW) is on even address, the low side of the
word (LSW) is in the immediately following address. The addresses are in HEX format.
NOTE: when the request is for the data of the data logger or the event logger that is
not valid (data not still collected), the returned value are = FFFFFFFF (hex).
Addresses table:
Addresses(Hex format) Description
0000-0025 process data
0064-02E3 data logger value, grouped in 32 blocks contiguous
from 20 registries of memory to 16 bit for every block
03E8-04E7 data logger events, grouped in 64 blocks contiguous
from 4 register of memory to 16 bit for every block
07D0-084F values of batch memories, grouped in 64 blocks
contiguous from 8 registers of memory to 16 bit for
every block
0BB8 index of the batch memory current in use
Process Parameters