Specifications

1070 072 131-102 (96.08) GB
BUEP03E Protocol 8-21
Parameter word Contents
HIGH byte LOW byte
PW8 Number of BCC Termination
type
No. of
terminations
No. of termination characters:
0 : No termination characters
1-4 : Number of termination characters
Termination type:
0 : Individual termination characters
1 : All termination characters
Number of BCC:
0 : No BCC characters
1 : One BCC character
2 : Two BCC characters
Termination type 1: The termination process requires that all the defined
termination characters occur one behind the other in the data flow.
Termination type 0: One of the defined termination characters in the data
flow causes the termination process.
BCC: The Block Check Count has a value of one byte or one word which
is formed according to a specific method (e.g. LRC, CRC) via a data re-
cord. BCC is formed on the receiver side according to the same method
and compared with the received BCC. This method enables any receive
faults to be recognised.
BCC can only be expected during the end-character sequence and is in
addition to the received data.
Parameter word Contents
High byte LOW byte
PW9 2nd termination character 1st termination character
PW10 4th termination character 3rd termination character
These termination characters are only considered when the PW7 number
has been defined between 1 and 4, otherwise they are ignored.
PW11:
Specifies the marker byte (0 - 255) in which the user wants to have the
interlinking depth if a fault or termination occurs. If values are larger than
255, an interlinking depth is not returned. Interlinking depth 1 refers to the
first, 2 to the second command in the command chain.
PW12 - PW16 are reserved.