7 Start-Up
System Manual Modular Systems
Page 94 of 114
HI 800 191 E Rev. 2.02
Figure 17: Assigning Process Signals per Drag&Drop - CPU OS up to V7
i
By sending a signal value from a controller to another controller (PES
1
-> PES
2
), the value is
available in the second controller PES
2
. To be able to use the value, use the same signals in the
PES
1
and PES
2
logic.
7. Select the other tab in the P2P Process Signals window to switch the direction of the data
exchange and define the signals for the other transfer direction.
Figure 18: Example of Process Signals - CPU OS up to V7
The signals for safe
ethernet
communication are defined.
Monitoring the Transmitted Signals
Whenever a data packet is sent, the signal values currently available in the controller are used.
Since the PES cycle can be faster than packets are sent, it may be not possible to transfer all
values if this is the case. To ensure the transfer and reception of a value, the monitoring time
(ReceiveTMO) on the sending side must still be running to allow reception of the
acknowledgment from the receiving side.
As an alternative, it is also possible to program an active acknowledgment signal within the
application on the receiving side.
