Standard Logic Operators; Or Gate With Two Inputs Or, Six Inputs Or6 And Twenty Inputs Or20; Function Block; Functionality - ABB RELION REX640 Technical Manual

1MRS759142 C
3.21
3.21.1
3.21.1.1
3.21.1.2
3.21.1.3
REX640
Technical Manual

Standard logic operators

OR gate with two inputs OR, six inputs OR6 and twenty
inputs OR20

Function block

GUID-045BF6FB-703C-4D57-BD5D-A2D3E9AB4728 V1 EN
Figure 140: Function blocks

Functionality

OR, OR6 and OR20 are used to form general combinatory expressions with boolean
variables.
The O output is activated when at least one input has the value TRUE. The default
value of all inputs is FALSE, which makes it possible to use only the required number
of inputs and leave the rest disconnected.
OR has two inputs, OR6 six and OR20 twenty inputs.

Signals

Table 258: OR Input signals
Name Type
B1 BOOLEAN
B2 BOOLEAN
Basic functions
Default Description
0 Input signal 1
0 Input signal 2
Section 3
267