Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Publication 1763-RM001C-EN-P - October 2009
326 ASCII Instructions
ACN - String
Concatenate
Instruction Type: output
The ACN instruction combines two ASCII strings. The second string is
appended to the first and the result stored in the destination.
Entering Parameters
Enter the following parameters when programming this instruction:
• Source A is the first string in the concatenation procedure.
• Source B is the second string in the concatenation procedure.
• Destination is where the result of Source A and B is stored.
Addressing Modes and File Types can be used as shown below:
Instruction Operation
This instruction executes on a false-to-true rung transition. Source B is
appended to Source A and the result is put in the Destination. Only the
first 82 characters (0 to 81) are written to the destination. If the string
length of Source A, Source B, or Destination is greater than 82, the ASCII
String Manipulation Error bit S:5/15 is set and the Invalid String Length
Error (1F39H) is written to the Major Error Fault Code word (S:6).
ACN
String Concatenate
Source A ST10:11
Source B ST10:12
Dest ST10:10
ACN
Execution Time for the ACN Instruction
Controller When Instruction Is:
True False
MicroLogix 1100 50.15 μs + 0.11 μs/
character
0.87 μs
ACN Instruction 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
(1)
Function Files
CS - Comms IOS - I/O DLS - Data Log
Address
Mode
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 A • • •
Source B •
• •
Destination •
• •
(1) The Control data file is the only valid file type for the Control Element.
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Allen-Bradley MicroLogix 1100 Specifications

General

Brand	Allen-Bradley
Model	MicroLogix 1100
Category	Controller
Language	English