Connections And Variables; Hardware Channels - ABB Relion Series Engineering Manual

1MRS757810 C
5.1.6
5.1.7
REC615 and RER615
Engineering Manual

Connections and variables

A connection is the link or "wire" between function block outputs and inputs.
There are rules and methods for making connections.
• Drag a line between two signals
• Link two signals by using variables
It is possible to search and replace variable names in Application
Configuration tool.
Connect the variables to a destination, for example to a function block
or a hardware output channel. The connectivity package
automatically removes the orphan variables which are not connected
to any destination.
Connection validation
A connection is only useful or even possible between two signals of the same base
attribute type.
GUID-720C9C93-AB56-4AEB-AF72-7E136E62A87F V1 EN
Figure 47: Application Configuration tool: an error message of a signal
mismatch for a connection

Hardware channels

Hardware channels can only be connected to a function block input or output. A
hardware connection can be established with the Application Configuration tool or
Signal Matrix tool.
Protection and control engineering
Section 5
71