Allen-Bradley ControlLogix 1756 - Example with a Single Branch; Example with Two Simultaneous Branches; Entering Rung Comments; Entering Neutral Text for Ladder Instructions

Publication 1756-RM084F-EN-P - July 2002
4-4 Entering Ladder Diagram Logic
Example with a single branch
N: XIC(conveyor_a)[,XIC(input_1) XIO(input_2) ]OTE(light_1);
Example with two simultaneous branches
N: XIC(conveyor_b)[,XIC(input_1) XIO(input_2) ,XIC(input_a) XIO(input_b) ]OTE(light_2);
Entering Rung Comments
The comments for rungs are similar to those for components except
that the syntax is a bit different. The rung comment syntax is:
RC: “comment” “more” “etc”;
A rung comment must be followed by a rung.
Entering Neutral Text for
Ladder Instructions
The following tables lists each ladder instruction and its neutral text
format. For details about a specific instruction, see one of these
manuals:
Instruction Type: Documents:
Basic, sequential
instruction
Logix5000 Controllers General Instructions Set Reference Manual , publication 1756-RM003
Process control or drives
instruction
Logix5000 Controllers Process Control and Drives Instruction sSet Reference Manual , publication 1756-RM006
Motion instruction
Logix5000 Controllers Motion Instructions Set Reference Manual, publication 1756-RM007
Instruction: Neutral text format:
ABL
ABL( channel,serial_port_control,character_count );
ABS
ABS( source,destination );
ACB
ACB( channel,serial_port_control,character_count );
ACL
ACL( channel,clear_serial_port_read,clear_serial_port_write );
ACS
ACS( source,destination );
ADD
ADD( source_A,source_B,destination );
AFI
AFI();
AHL
AHL( channel,ANDMask,ORMask,serial_port_control,channel_status );
AND
AND( source_A,source_B,destination );
ARD
ARD( channel,destination,serial_port_control,string_length,
characters_read
);