Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Publication 1763-RM001C-EN-P - October 2009
160 Relay-Type (Bit) Instructions
When used on a rung, the bit address being examined can correspond to
the status of real world input devices connected to the base unit or
expansion I/O, or internal addresses (data or function files). Examples of
devices that turn on or off:
• a push button wired to an input (addressed as I1:0/4)
• an output wired to a pilot light (addressed as O0:0/2)
• a timer controlling a light (addressed as T4:3/DN)
• a bit in the bit file (addressed as B3/16)
The instructions operate as follows:
Addressing Modes and File Types can be used as shown in the following
table:
XIO and XIC Instruction Operation
Rung State Addressed
Bit
XIC Instruction XIO Instruction
True Off Returns a False Returns a True
True On Returns a True Returns a False
False -- Instruction is not evaluated Instruction is not evaluated
XIC and XIO Instructions Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 82.
Parameter
Data Files
Function Files
(1)
CS - Comms IOS - I/O DLS - Data Log
Address
Mode
(2)
Address Level
O I S B T, C, R N F ST L MG, PD RI/RIX PLS RTC HSC PTO, PWM STI EII BHI MMI LCD Immediate Direct Indirect Bit Word Long Word Element
Operand Bit •••••• •• ••••••••••• • ••
(1) PTO and PWM files are only for use with MicroLogix 1100 BBB unit.
(2) See Important note about indirect addressing.
IMPORTANT
You cannot use indirect addressing with: S, ST, MG, PD,
RTC, HSC, PTO, PWM, STI, EII, BHI, MMI, CS, IOS, LCD,
and DLS files.
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive

Allen-Bradley MicroLogix 1100 Specifications

General

Brand	Allen-Bradley
Model	MicroLogix 1100
Category	Controller
Language	English