7-6 Inputs, Outputs, Timers, and Other Control Logic Date Code 20010625
SEL-311L Instruction Manual
Table 7.1: Correspondence Between Local Control Switch Positions and Label Settings
Switch Position
Label
Setting
Setting Definition
Logic State
not applicable NLBn Name of Local Control
Switch
not applicable
ON SLBn “Set” Local bit LBn logical 1
OFF CLBn “Clear” Local bit LBn logical 0
MOMENTARY PLBn “Pulse” Local bit LBn logical 1 for one processing
interval
Note the first setting in Table 7.1 (NLBn) is the overall switch name setting. Make each label
setting through the serial port using the command SET T. View these settings using the serial
port command SHO T (see Section 9: Setting the Relay and Section 10: Line Current
Differential Communications and Serial Port Communications and Commands).
Local Control Switch Types
Configure any local control switch as one of the following three switch types:
ON/OFF Switch
Local bit LBn is in either the ON (LBn = logical 1) or OFF (LBn = logical 0) position.
Figure 7.4: Local Control Switch Configured as an ON/OFF Switch
OFF/MOMENTARY Switch
The local bit LBn is maintained in the OFF (LBn = logical 0) position and pulses to the
MOMENTARY (LBn = logical 1) position for one processing interval (1/4 cycle).
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