Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
ASCII Instructions 379
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…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).
AEX - String Extract
Instruction Type: output
ACN Instruction Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 92.
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 PTOX, PWMX 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.
AEX
String Extract
Source ST10:0
Index 1
Number 5
Dest ST10:3
AEX
Execution Time for the AEX Instruction
Controller When Instruction Is:
True False
MicroLogix 1400 10.0290 µs 0.1850 µs
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Allen-Bradley MicroLogix 1400 Specifications

General

Brand	Allen-Bradley
Model	MicroLogix 1400
Category	Controller
Language	English