Signals And Signal Management - ABB Relion 650 Series Engineering Manual

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Figure 31:
1 Connection(s)
2 User defined function block name
3 Function block, selected (red)
4 Mandatory signal (indicated by a red triangle if not connected)
5 Function block name
6 Function block, locked (red)
7 ANSI symbol
8 Inverted output
9 Hardware, binary output channel
10 Hardware, analog input channel
11 User defined signal name
12 Hardware, binary input channel
13 Execution order
14 Cycle time
15 Instance number
16 Inverted input
17 Signal description note
5.1.3

Signals and signal management

A function block has set of input and output signals. The placement of the signals for a function
block is from left to right. Input signals are placed on the left side and output signals are placed on
the right side.
A function block can contain more signals than needed in that application part. A signal that is not
used in a particular application is possible to hide in the function block view in ACT.
Signals are located on both sides of the middle position up and down. When there is space left,
move some signals up or down for a better visibility and connection routing.
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ACT: Function block overview
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