Basler BE1-CDS220, Instruction Manual

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BE1-CDS220 Protection and Control 4-3
At the top center of the BESTlogic Function Element screen is a pull-down menu labeled Logic. This
menu allows viewing of the BESTlogic settings for each preprogrammed logic scheme. A custom logic
scheme must be created and selected in the Logic pull-down menu at the top of the screen before
BESTlogic settings can be changed. See Section 7, BESTlogic Programmable Logic.
Enable the Setting Group Selection function by selecting its mode of operation from the Mode pull-down
menu. To connect the functions inputs, select the button for the corresponding input in the BESTlogic
Function Element screen. The BESTlogic Expression Builder screen will open. Select the expression type
to be used. Then, select the BESTlogic variable, or series of variables to be connected to the input.
Select Save when finished to return to the BESTlogic Function Element screen. For more details on the
BESTlogic Expression Builder, See Section 7, BESTlogic Programmable Logic. Select Done when the
settings have been completely edited.
Table 4-1 summarizes the BESTlogic settings for Setting Group Control.
Table 4-1. BESTlogic Settings for Setting Group Control
Function Range/Purpose Default
Mode
0 = Disabled, 1 = Discrete Inputs, 2 = Binary Inputs (If Auto mode is
desired, logic mode must be either 1 or 2.)
1 (Discrete Inputs)
D0 Logic expression. Meaning is dependent upon the Mode setting. 0
D1 Logic expression. Meaning is dependent upon the Mode setting. 0
D2 Logic expression. Meaning is dependent upon the Mode setting. 0
D3 Logic expression. Meaning is dependent upon the Mode setting. 0
Automatic
Logic Expression. When TRUE, automatic control is enabled and
when FALSE, logic control is enabled.
/0
Example 1. Make the following settings to the setting group selection logic. Refer to Figure 4-2.
Mode: Discrete Inputs
D0: 0
D1: 0
D2: 0
D3: IN2
AUTOMATIC: /IN2
Manual (logic) control reads the status of the logic inputs to the setting group control function block to
determine what setting group should be active. For the logic inputs to determine which setting group
should be active, the AUTO input must be logic 0. The function block logic mode setting determines how it
reads these logic inputs. There are three possible logic modes as shown in Table 4-1.
When the setting group control function block is enabled for Mode 1, there is a direct correspondence
between each discrete logic input and the setting group that will be selected. That is, asserting input D0
selects SG0, asserting input D1 selects SG1, etc. The active setting group latches in after the input is
read so they can be pulsed. It is not necessary that the input be maintained. If one or more inputs are
asserted at the same time, the numerically higher setting group will be activated. A pulse must be present
for approximately one second for the setting group change to occur. After a setting group change occurs,
no setting group change can occur within two times the SGC alarm-on time. Any pulses to the inputs will
be ignored during that period.
Figure 4-3 shows an example of how the inputs are read when the setting group control function logic is
enabled for Mode 1. Note that a pulse on the D3 input while D0 is also active does not initiate a setting
group change to SG3 because the AUTO input is active.