Siemens SINUMERIK 840C - Manual (Page 1056)

10.94 12 Functional Descriptions
12.28 High-speed data channels
12.28 High-speed data channels
The "High-speed data channels" function
is an option (SW 4 and higher).
12.28.1 Corresponding data
• Option 6FC5 150-0AS40-0AA0
• Data block DB2 (configuring DB)
• Data block DB 3 (data transmission areas)
12.28.2 Functional description
With the "High-speed data channels" function, signals from SIMODRIVE 611D SERVO digital
drives as well as signals from an NCK I/O module are exchanged cyclically with the PLC user
program.
With SW versions up to and including SW 3, analog values are read in via analog modules in
the PLC area.
Functional structure of high-speed data channels
DB 2
NC
NC PLC link RAM
Fixed area for configuration of DB 3
Reserved
DB 3
Fixed area for activation bits/status bits
Fixed area for maximum of 32 pointers to data
transfer areas
DW 100 1st data transfer area (high-speed channel)
DW 110 2nd data transfer area (high-speed channel)
e.g. 100
e.g. 110
611D
PLC
.
.
.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 12–281
SINUMERIK 840C (IA)