X90 mobile modules
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X90 mobile system User's manual V 1.20 - Translation of the original manual
5.4.1.5.11.4 Flatstream communication
Introduction
B&R offers an additional communication method for some modules. "Flatstream" was designed for X2X and
POWERLINK networks and allows data transmission to be adapted to individual demands. Although this method
is not 100% real-time capable, it still allows data transfer to be handled more efficiently than with standard cyclic
polling.
X2X
Flatstream
Cyclic
communication
Cyclic
communication
Field-device
language
B&R field device
B&R field device
B&R field device
B&R module
B&R module
B&R module
PLC or
bus controller
PLC or
bus controller
PLC or
bus controller
B&R CPU
B&R CPU
B&R CPU
Device command
X2X-compatible
device command
As bridge
Cache values
Cyclic call
of cache values
Acyclic call
of cache values
Cyclic call
using I/O mapping
Acyclic call
using
library functions
Cache values
Figure 43: 3 types of communication
Flatstream extends cyclic and acyclic data queries. With Flatstream communication, the module acts as a bridge.
The module is used to pass CPU queries directly on to the field device.
