Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

201 Publication 1763-RM001C-EN-P - October 2009
Chapter 10
Conversion Instructions
The conversion instructions multiplex and de-multiplex data and perform
conversions between binary and decimal values.
Using Decode and
Encode Instructions
Addressing Modes and File Types can be used as shown in the following
table:
Instruction Used To: Page
DCD - Decode 4 to 1-of-16 Decodes a 4-bit value (0 to 15), turning on the
corresponding bit in the 16-bit destination.
202
ENC - Encode 1-of-16 to 4 Encodes a 16-bit source to a 4-bit value.
Searches the source from the lowest to the
highest bit and looks for the first set bit. The
corresponding bit position is written to the
destination as an integer.
203
FRD - Convert From Binary
Coded Decimal
Converts the BCD source value to an integer and
stores it in the destination.
204
TOD - Convert to Binary Coded
Decimal
Converts the integer source value to BCD format
and stores it in the destination.
208
Conversion 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
CS - Comms IOS - I/O DLS - Data Log
Address
Mode
(1)
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
Source •• ••• • • ••
Destination • • • • • •
• ••
(1) 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, 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