Methods Of Transmission In Print Mode - Siemens SIMATIC S5 CP 523 Manual

Technical Description
2nd example:
Character frame: 11-bit
Data format: 8 data bits (1 start bit, 8 data bits, 2 stop bits)
.: 1
Bit no
0
1 start
bit
Figure 2-4. 11-Bit Character Frame with 8 Data Bits and 2 Stop Bits
Note:
When using the RS-232-C (V.24) interface, the readiness of the sending or receiving device can
only be recognized via the control signals. You are therefore recommended to set Handshaking
ON mode.
2.3.1 Print Mode
You have a choice of three methods of transmission in Print mode. All three are possible with both
the RS-232-C (V.24) and TTY interfaces.
Method of Line Used TTY/
Transmission RS-232-C (V.24)
XON/XOFF RXD
protocol
BUSY signal RXD/DSR
Without Irrelevant
protocol
2-6
2 3 4 5
8 data bits
Table 2-1. Methods of Transmission in Print Mode
Parameters
XON characters
XOFF characters
Wait after
- CR (carriage return)
- LF (line feed)
- FF (form feed)
6 7 8
Required Parameter
Block
2
- 0
1
9 10 11
1 1
2 stop bits
Remarks
Priority over
BUSY signal and
print without protocol
Priority over print
without protocol
Line break not
detectable
EWA 4NEB 811 6044-02a
CP 523