Burkert Type 8056 - Manual (Page 29)

- 29 - RS232_485_ETP_MODBUS_BU_REV02.doc
Note:
The timer char is set to 2.5 time the time necessary for to receive a char: 2.5 * tchar.
Every time there is a char in the receive buffer the timer char is restart.
If the receive buffer doesn’t receive a char in the next 2.5 * tchar, the timer char expire and the reception of data is
terminated.
The address are ok ?
The MASTER read the BLOCK CODE and BLOCK LENGHT
Has the MASTER received
BLOCK LENGHT chars ?
The checksum is ok ?
Bad Checksum
Packet corrupted Decoding of the answer with success
Is the Block code = 0xDA ?
Is this the last block
Block code = 0xDA
This is the last block
Reception completed
END
Another block to
receive
Si
Si
No
No
No
Si
No
Si
Timer char expired ?
No
Si
Has it received char ?
Reset timer char
No
Si
Packet not
complete