Mitsubishi Electronics manual 196

11 TROUBLESHOOTING

MELSEC-Q

Special Register List

(5) Memory card

								Set by	Corresponding	Corresponding
Number	Name	Meaning			Explanation				ACPU
								(When set)		CPU
									D9
			• Indicates memory card A model installed
			B15	B8 B7	B4 B3	B0
			0< ----------->0
						Drive 1	0: Does not exist	S (Initial and card	New	QCPU
						(RAM) model	1: SRAM	removal)
							0: Does not exist
						Drive 2	(1: SRAM)
	Memory	Memory				(ROM) model	2: ATA FRASH
SD600	card A	card A					3: Flash ROM
	models	models • Indicates memory card A model installed
			B15	B8 B7	B4 B3	B0
			0< ----------->0				0: Does not exist
						Drive 1		S (Initial and card
						(RAM) model	1: SRAM		New	QnA
								removal)
							0: Does not exist
						Drive 2
						(ROM) model	2: E2PROM
							3: Flash ROM
	Drive 1							S (Initial and card	New	QCPU
		Drive 1						removal)
SD602	(RAM)		• Drive 1 capacity is stored in 1 kbyte units
		capacity						S (Initial and card
	capacity								New	QnA
								removal)
	Drive 2							S (Initial and card	New	QCPU
		Drive 2						removal)
SD603	(ROM)		• Drive 2 capacity is stored in 1 kbyte units
		capacity						S (Initial and card
	capacity								New	QnA
								removal)

•The use conditions for memory card A are stored as bit patterns (In use when ON)

•The significance of these bit patterns is indicated below:

B0: Boot operation (QBT)

B8: Not used

B1: Parameters (QPA)

B9: CPU fault history (QFD)

B2: Device comments (QCD)

BA: SFC trace (QTS)

S (Status change)

New

QCPU

B3: Device initial value (QDI)

BB: Local device (QDL)

B4: File register R (QDR)

BC: Not used

B5: Trace (QTS)

BD: Not used

Memory

Memory

B6: Not used

BE: Not used

B7: Not used

BF: Not used

SD604

card A

card A use

use

• The use conditions for memory card A are stored as bit patterns

conditions

conditions

(In use when ON)

• The significance of these bit patterns is indicated below:

B0:

Boot operation (QBT)

B8:

Simulation data (QDS)

B1:

Parameters (QPA)

B9:

CPU fault history (QFD)

B2:

Device comments (QCD)

B10: SFC trace (QTS)

S (Status change)

New

QnA

B3:

Device initial value (QDI)

B11: Local device (QDL)

B4:

File register R (QDR)

B12: Not used

B5:

Sampling trace (QTS)

B13: Not used

B6:

Status latch (QTL)

B14: Not used

B7:

Program trace (QTP)

B15: Not used

• Indicates memory card B models installed

B15

B8 B7

B4 B3

B0

0< ----------- >0

Memory

Memory

Drive 3

(0: Does not exist)

SD620

card B

card B

(RAM) model

1: SRAM

S (Initial)

New

QCPU

models

models

Drive 4

0: Does not exist

(1: SRAM)

(ROM) model

(2: E2PROM)

3: Flash ROM

Drive 4 is fixed to "3" because it has built-in Flash ROM.

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