Siemens SIMATIC S5 CP 523 Manual page 130

Communications Mode
Table 7-9. Transfer Memory Assignments for "Transfer Initialization Data for Parameter Block 0"
Byte
0 Job number
"Transfer parameter setting data"
1 Bit 4 to 7: Parameter block number
Bit 0 to 3:
2 Baud rate
3 Parity
4 BUSY signal
5 Interface
6 Data format:
11-bit character
frame
10-bit character
frame
7 HW handshake
7-24
Meaning
Only significant for
parameters block 7 and 9
110 baud
200 baud
300 baud
600 baud
1200 baud
2400 baud
4800 baud
9600 baud
"mark"
"space"
no parity check
Parity:
7 data bits
8 data bits
8 data bits
7 data bits
7 data bits
8 data bits
Possible Values
90
H
00
H
01
H
02
H
03
H
04
H
05
H
06
H
07
H
08
H
even 00
H
odd 01
H
02
H
03
H
04
H
No 00
H
TTY 00
H
V.24 01
H
(yes) 00
H
(yes) 01
H
(no) 02
H
(no) 03
H
(yes) 04
H
(no) 05
H
OFF 00
H
ON 01
H
CP 523
Default Values
on the CP 523
-
-
04
H
00
H
00
H
00
H
00
H
00
H
EWA 4NEB 811 6044-02a