Allen-Bradley MicroLogix 1000 User Manual

Name: Allen-Bradley MicroLogix 1000
Brand: Allen-Bradley
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Preface

MicroLogix 1000 Programmable Controllers User Manual

11–4

• Bit Address

is the address of the source bit. The status of this bit is inserted in

either the first (lowest) bit position (BSL) or last (highest) bit position (BSR).

• Length (size of bit array) is the number of bits in the bit array, up to 1680 bits.

A length value of 0 causes the input bit to be transferred to the UL bit.

A length value that points past the end of the programmed file causes a major

error to occur.

If you alter a length value with your ladder pr

ogram, make

certain that the altered value is valid.

The instruction invalidates all bits beyond the last bit in the array (as defined by

the length) up to the next word boundary.

Effects on Index Register S:24

The shift operation clears the index register S:24 to zero.

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