Siemens SIMATIC BATCH Operating Manual page 45

separate communication channel (S7DOS). The result is shorter and simplified communication
paths.
Communication path between BATCH control server and automation system
The new concept in AS-based mode uses a direct communication channel for faster and more
stable data exchange between the BATCH control server and the automation system. This
channel is based on S7 DOS and allows the BATCH control server direct access to the process.
The communication channel has the following tasks:
● Downloading blocks with the control recipe for the sequence of a unit
● Sending control commands to the recipe control
● Transferring step data from the automation system to the BATCH control server
● Transferring setpoint values, process values and measured values from the automation
system to the BATCH control server
The communication connections between AS and BCS are created automatically by the
BATCH configuration dialog.
Data communication between the server and automation system
The following figure, "Reducing the communication volume" shows how the individual software
components were changed to reduce the volume of communication.
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA
Product introduction and installation
3.4 Operating modes in SIMATIC BATCH
45