Checking Programs; Errors During Programming Device Input; Program Checks With The Cx-Programmer; Program Execution Check - Omron CJ - PROGRAMMING MANUAL 08-2008 Programming Manual

Checking Programs

2-3

Checking Programs

2-3-1

Errors during Programming Device Input

2-3-2

Program Checks with the CX-Programmer

2-3-3

Program Execution Check

66
CS/CJ-series programs can be checked at the following stages.
• Input check during Programming Console input operations
• Program check by CX-Programmer
• Instruction check during execution
• Fatal error check (program errors) during execution
CX-Programmer
The program will be automatically checked by the CX-Programmer at the fol-
lowing times.
Timing
When inputting Instruction inputs, operand inputs, programming patterns
ladder diagrams
When loading All operands for all instructions and all programming patterns
files
When download- Models supported by the CS/CJ Series and all operands for all
ing files instructions
During online Capacity, etc.
editing
The results of checking are output to the text tab of the Output Window. Also,
the left bus bar of illegal program sections will be displayed in red in ladder
view.
Programming Console
Errors at the following points will be displayed on the Programming Console
during input.
Error display
CHK MEM Pin 1 on the DIP switch on the CPU Unit is set to ON (write-protect).
IO No. ERR An illegal I/O input has been attempted.
The user program can be checked in the CX-Programmer. When the program
is checked, the user can specify program check in any of four levels: A, B, or C
(in order of the seriousness of the errors) or a custom check level.
The CX-Programmer does not check range errors for indirectly addressed
operands in instructions. If an instruction's operand data is invalid, the ER
Flag will be turned ON during the program execution check, which is
described in the next section. For details, refer to the CS/CJ-series Program-
mable Controllers Instructions Reference Manual (W340).
For details on the CX-Programmer's checks, refer to the CX-Programmer
Operation Manual (W446).
Operand and instruction location checks are performed on instructions during
input from Programming Devices (including Programming Consoles) as well
as during program checks from Programming Devices (excluding Program-
ming Consoles). However, these are not final checks.
Checked contents
Cause
Section 2-3