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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).
• Non-fatal error information: Returns the non-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
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)