30
•
Fieldbus coupler 750-342
Data exchange
Modular I/O System
ETHERNET TCP/IP
3.1.4.3.6 750-650 RS232 Interface module,
750-651 TTY-,20 mA Current Loop,
750-653 RS485 Interface module
This process data architecture holds true for the modules 750-650, 750-651
and 750–653.
Item-No.:
Description:
750-650
RS 232 C Interface 9600,n,8,1
750-651
TTY Interface, 20 mA Current Loop
750-653
RS485 Interface
The modules appear on the bus as a combined analog input and output module
with 3 x 16-bit input and output data, i.e. with a total of 4 bytes user data, oc-
cupying 2 words each with word-alignment.
Address
Bytes
Comment
Module
Offset
High
Low
0
D0
C/S
Data
byte
Control /
Status byte
1
D2
D1
Data bytes
Module 1:
750-650,
750-651,
750-653
2
User data
User data
Data bytes
Module 2:
Analog module Channel 1
3
User data
User data
Data bytes
Module 2:
Analog module Channel 2
...
...
...
...
...
3.1.4.3.7 750-650/000-001 RS232 Interface module 5 Byte
The RS232 interface module 750-650 can also be operated with a data format
of 5 bytes and one Control/Status byte, i.e. a total of 6 bytes user data. For this
data format, order the variation with the part number 750-650/000-001, occu-
pying 3 words each with word-alignment in the input and output area of the
process image.
Address
Bytes
Comment
Module
Offset
High
Low
0
D0
C/S
Data
byte
Control /
Status byte
1
D2
D1
2
D4
D3
Data bytes
Module 1:
750-650/000-001
3
User data
User data
Data bytes
Module 2:
Analog module Channel 1
4
User data
User data
Data bytes
Module 2:
Analog module Channel 2
...
...
...
...
...
