Omron CS1W-DRM21, CJ1W-DRM21 operation manual 173

Receiving Explicit Messages Section 6-5

•Operation status: Returns the operation status of the CPU Unit in 1-byte (2-digit) hexadecimal.

•Operating mode: Returns the operating mode of the CPU Unit in 1-byte (2-digit) hexadecimal.

0001 Hex: PROGRAM mode; 0002 Hex: MONITOR mode;

0004 Hex: RUN mode

•Fatal error information: Returns the fatal error information for the CPU Unit in 2 bytes (low to high).

1:System error (FALS)

1:Cycle time over

1:Program error

1:I/O setting error

1:No. of I/O points exceeded

1:Inner Board fatal error

1:Number duplicate use error

1:I/O Bus error

1:Memory error

•Non-fatal error information: Returns the non-fatal error information for the CPU Unit in 2 bytes (low to high).

Unspecified (reserved for system use) 1: Special I/O Unit error

1: CPU Bus settings error

1:Battery error

1:SYSMAC BUS error

1:Special I/O Unit

1:CS1-series CPU Bus Unit error

1:Inner Board error

1:I/O verification error

1:PC system error

1:Unspecified (reserved for system use)

1:Basic I/O Unit error

1:Interrupt task error

1:Unspecified (reserved for system use)

1:System error (FAL)

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