Parallel Elements; Joining Series Branches In Parallel; Joining Parallel Branches In Series; Combination Networks - Automationdirect.com DL05 User Manual

Chapter 5: Standard RLL Instructions

Parallel Elements

You also have to join contacts in parallel. The OR instruction allows you to do this. The
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following example shows two contacts in parallel and a single output coil. The instructions
would be STR X0, OR X1, followed by OUT Y0.
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Joining Series Branches in Parallel

Quite often it is necessary to join several groups of series elements in parallel. The Or Store
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(ORSTR) instruction allows this operation. The following example shows a simple network
consisting of series elements joined in parallel.
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Joining Parallel Branches in Series

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You can also join one or more parallel branches in series. The And Store (ANDSTR) instruction
allows this operation. The following example shows a simple network with contact branches in
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series with parallel contacts.
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a A
B b
C c

Combination Networks

You can combine the various types of
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series and parallel branches to solve most
any application problem. The following
example shows a simple combination
network.
5-6 DL05 Micro PLC User Manual, 6th Edition, Rev. D
DirectSOFT 5
X0 X1
X2 X3
DirectSOFT 5
X0
X1
DirectSOFT 5
X0 X1
X2
Handheld Mnemonics
Y0
STR X0
AND X1
OUT
STR X2
AND X3
ORSTR
OUT Y0
END
END
Handheld Mnemonics
Y0
STR X0
OR X1
OUT
OUT Y0
END
END
Handheld Mnemonics
Y0
STR X0
STR X1
OUT
OR X2
ANDSTR
OUT Y0
END
END
X0 X2
X1 X3
X4
X6
X5 Y0
OUT
END