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

1MRS759142 F
3.21

Standard logic operators

3.21.1 OR gate with two inputs OR, six inputs OR6 and twenty
inputs OR20
3.21.1.1 Function block
Figure 163: Function block
3.21.1.2 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.
3.21.1.3 Signals
Table 282: OR Input signals
Name
B1
B2
REX640
Technical Manual
Type Default
BOOLEAN 0
BOOLEAN 0
Basic functions
Description
Input signal 1
Input signal 2
289