Omron FQM1-MMA21 Appendix C, System Flags, Program Error Flags, Other Error Flags and Bits

System Setup, Auxiliary Area Allocations, and Built-in I/O Allocations				Appendix C
Address	Bits	Name	Function		Controlled by
A524	00 to 15	Interrupt Counter 0	These words contain the interrupt counter PVs for interrupt input 0 to 3		Module
		Counter PV	operating in counter mode.
A525	00 to 15	Interrupt Counter 1	The counter PV starts decrementing from the counter SV. When the
			counter PV reaches the 0, the PV is automatically reset to the SV.
		Counter PV
			Range: 0000 to FFFF
A526	00 to 15	Interrupt Counter 2
		Counter PV
A527	00 to 15	Interrupt Counter 3
		Counter PV

Allocations That Are the Same for the Coordinator Module and Motion Control Modules

System Flags

Address	Bits	Name					Function		Controlled by
A000 to	00 to 15	Subroutine Input Condi-	These flags contain the status of the input condition for JSB(982) when						Module
A015		tion Flags	JSB(982) is used to call a subroutine.
					Address			Corresponding subroutines
				Word		Bits
				A000		00 to 15		SBN000 to SBN015
				A001		00 to 15		SBN016 to SBN031
				A002		00 to 15		SBN032 to SBN047
				to		to		to
				A015		00 to 15		SBN240 to SBN255
A206 to	00 to 15	Maximum Cycle Time	These words store the maximum cycle time every cycle. The cycle
A207			time is recorded in 8-digit hexadecimal
			(unit: 0.01 ms).
A208 to	00 to 15	Present Cycle Time	These words store the present cycle time every cycle in 8-digit hexa-
A209			decimal (unit: 0.01 ms).

Program Error Flags

Address	Bits	Name	Function	Controlled by
A401	09	Program Error Flag	ON when program contents are incorrect.	Module
		(fatal error)	Module operation will stop.
A405	11	No END Error Flag	ON when there isn’t an END(001) instruction in each program within a
			task.
	12	Task Error Flag	ON when a task error has occurred. The following conditions generate
			a task error.
			There isn’t a program allocated to the task.
	13	Differentiation Overflow	The allowed value for Differentiation Flags which correspond to differ-
		Error Flag	entiation instructions has been exceeded.
	14	Illegal Instruction Error	ON when a program that cannot be executed has been stored.
		Flag
	15	UM Overflow Error Flag	ON when the last address in UM (User Memory) has been exceeded.

Other Error Flags and Bits

Error Log and Error Code

Address	Bits	Name	Function	Controlled by
A100 to	00 to 15	Error Log Area	When an error has occurred, the error code and error contents are	Module
A199			stored in the Error Log Area.
A408	00 to 15	Error Log Pointer	When an error occurs, the Error Log Pointer (binary) is incremented by
			1 to indicate the location where the next error will be recorded as an
			offset from the beginning of the Error Log Area (A100 to A199).

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