Publication 1762-RM001C-EN-P
20-18 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
Table 20.17 Execution Time for the ACN Instruction
Controller When Instruction Is:
True False
MicroLogix 1200 Series B, FRN 3 or later 22.6
µ
s + 11.5
µ
s/character 0.0
µ
s
MicroLogix 1500 Series B, FRN 4 or later 17.9
µ
s + 10.2
µ
s/character 0.0
µ
s
Table 20.18 ACN Instruction Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page4-2.
Parameter
Data Files
(1)
(1) The Control data file is the only valid file type for the Control Element.
Function Files
CS - Comms
IOS - I/O
Address
Mode
Address
Level
O
I
S
B
T, C, R
N
ST
L
MG, PD
RTC
HSC
PTO, PWM
STI
EII
BHI
MMI
DAT
TPI
Immediate
Direct
Indirect
Bit
Word
Long Word
Element
Source A • • •
Source B •
• •
Destination •
• •
To Next Page
Loading...
Need help?
General
