Table of Contents
Advertisement
Serial communication protocols
ASCII > Parameter data of ASCII
5.2 ASCII
5.2.1 Basics ASCII
Mode of operation
5.2.2 Parameter data of ASCII
Parameters
Name
Bytes
PII_L
1
PIQ_L
1
DIAG_EN
1
BAUD
1
PROTOCOL
1
OPTION3
1
OPTION4, 5
2
OPTION6, 7
2
OPTION8
1
OPTION9...14
6
OPTION15
1
OPTION16
1
1) This record set may only be transferred at STOP state.
2) Value depends on the host system.
58
ASCII data communication is a simple kind of data exchange that may be compared to a
multicast/broadcast function. Individual telegrams are separated by means of character
delay time (ZVZ). Within this time the transmitter must have sent its telegram to the
receiver. A telegram is only passed on to the host system if this was received completely.
The receiving station must acknowledge the receipt of the telegram within the "time delay
after command" (ZNA) or command window that was defined in the sending station.
These time stamps may be used to establish a simple serial communication link. Since
during ASCII transmission apart from the usage of the parity bit no further step takes
place for data protection, the data transfer is very efficient however not secured. With the
parity the inversion of one bit within a character may be secured. If two or more bits of a
character are inverted, this error may no longer be detected.
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
1)
Length process image output data
1)
Diagnostic interrupt
1)
Baud rate
Protocol
Character frame
ZNA 0 ... 65535 (in ms)
ZVZ 0 ... 65535 (in ms)
Number Receive buffer
reserved
Operating mode
Line assignment
Default
DS
2)
02h
02h
2)
00h
00h
00h
80h
01h
80h
13h
80h
0
80h
250
80h
1
80h
00h
80h
00h
80h
00h
80h
HB300 | CP | 040-1CA00 | en | 18-28
VIPA System SLIO
IX
SX
3100h
01h
3101h
02h
3102h
03h
3103h
04h
3104h
05h
3105h
06h
3106h ... 3107h 07h ...
08h
3108h ... 3109h 09h ...
0Ah
310Ah
0Bh
310Bh ...
0Ch ...
3110h
11h
3111h
12h
3112h
13h
Advertisement
Table of Contents
