Allen-Bradley micrologix 1500 Reference Manual

Publication 1762-RM001C-EN-P
20-16 ASCII Instructions
Addressing Modes and File Types can be used as shown below:
Instruction Operation
When the rung goes from false-to-true, the Enable bit (EN) is set. When
the instruction is placed in the ASCII queue, the Queue bit (EU) is set. The
Running bit (RN) is set when the instruction is executing. The Done bit
(DN) is set on completion of the instruction.
The controller determines the number of characters in the buffer and puts
this value in the POS field of the control data file. The Done bit (DN) is
then set. If a zero appears in the POS field, no characters were found. The
Found bit (FD) is set when the POS filed is set to a non-zero value
ACI - String to Integer
Instruction Type: output
Use the ACI instruction to convert a numeric ASCII string to an integer
(word or long word) value.
Table 20.14 ACB 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
Channel • •
Control •
• •
ACI
String to Integer
Source ST10:0
Dest N7:0
0<
ACI
Table 20.15 Execution Time for the ACI Instruction
Controller Data Size When Instruction Is:
True False
MicroLogix 1200 Series B,
FRN 3 or later
word 17.6
µ
s + 7.2
µ
s/character 0.0
µ
s
long word 24.6
µ
s + 11.6
µ
s/character 0.0
µ
s
MicroLogix 1500 Series B,
FRN 4 or later
14.2
µ
s + 6.3
µ
s/character 0.0
µ
s

Allen-Bradley micrologix 1500 Specifications

General

Brand	Allen-Bradley
Model	micrologix 1500
Category	Controller
Language	English