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VIPA System SLIO
Block check character
(BCC-Byte)
Initialization conflict
Data Link Escape (DLE-
character)
5.4.2 Parameter data of 3964(R)
Parameters
Name
Bytes
PII_L
1
PIQ_L
1
DIAG_EN
1
BAUD
1
PROTOCOL
1
OPTION3
1
OPTION4
1
OPTION5
1
OPTION6
1
OPTION7
1
OPTION8
1
OPTION9
1
OPTION10
1
HB300 | CP | 040-1CA00 | en | 18-28
3964R appends a Block check character to safeguard the transmitted data. The BCC-
Byte is calculated by means of an XOR function over the entire data of the telegram,
including the DLE/ETX. When a BCC-Byte is received that differs from the calculated
BCC, a NAK is transmitted instead of the DLE.
If two stations should simultaneously attempt to issue a connection request within the
QVZ then the station with the lower priority will transmit the DLE and change to receive
mode.
The driver duplicates any DLE-character that is contained in a telegram, i.e. the
sequence DLE/DLE is sent. During the reception, the duplicated DLEs are saved as a
single DLE in the buffer. The telegram always terminates with the sequence
DLE/ETX/BCC (only for 3964R).
The control codes :
n
02h = STX
n
03h = ETX
n
10h = DLE
n
15h = NAK
DS - Record set for access via CPU, PROFIBUS and PROFINET
IX - Index for access via CANopen
SX - Subindex for access via EtherCAT with Index 3100h + EtherCAT-Slot
More can be found in the according manual of your bus coupler.
Function
Length process image input data
Length process image output data
1)
Diagnostic interrupt
Baud rate
Protocol
Character frame
ZNA (x 20ms)
ZVZ (x 20ms)
QVZ (x 20ms)
BWZ (x 20ms)
STX repetitions
DBL
Priority
Serial communication protocols
3964(R) > Parameter data of 3964(R)
Default
DS
02h
1)
2)
02h
1)
2)
00h
00h
00h
80h
03h
80h
13h
80h
0
80h
10
80h
10
80h
10
80h
5
80h
6
80h
0
80h
IX
SX
3100h
01h
3101h
02h
3102h
03h
3103h
04h
3104h
05h
3105h
06h
3106h
07h
3107h
08h
3108h
09h
3109h
0Ah
310Ah
0Bh
310Bh
0Ch
310Ch
0Dh
69
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