Allen-Bradley micrologix 1500 Reference Manual

Publication 1762-RM001C-EN-P
Sequencer Instructions 15-3
The following figure explains how the SQC instruction works.
SQC FD bit is set when the instruction detects that an input word matches
(through mask) its corresponding reference word.
The FD bit R6:21/FD is set in the example, since the input word matches
the sequencer reference value using the mask value.
EN
DN
FD
SQC
Sequencer Compare
File #B10:11
Mask FFF0
Source I:3.0
Control R6:21
Length 4<
Position 2<
SQC
Input Word I:3.0
0010 0100 1001 1101
Mask Value FFF0
1111 1111 1111 0000
Sequencer Ref File #B10:11
Word Step
B10:11 0
B10:12 1
B10:13 0010 0100 1001 0000 2
B10:14 3
B10:15 4

Allen-Bradley micrologix 1500 Specifications

General

Processor Type	16-bit
Programming Language	Ladder Logic
Mounting	DIN rail or panel mount
Programming Software	RSLogix 500
Communication Ports	RS-232
Power Supply	24V DC
Operating Temperature	0°C to 55°C (32°F to 131°F)
Controller Type	Programmable Logic Controller (PLC)