iDect FC6A series User Manual page 371

Special Internal Relays for the SD Memory Card
The special internal relays (M8070, M8071) are turned on and off according to the SD memory card insertion status and access
status. When special internal relay M8072 is turned on, access to the SD memory card is stopped.
Device
Function
Address
SD Memory Card Mount
M8070
Status
M8071 Accessing SD Memory Card
M8072 Unmount SD Memory Card
Note: R/W stands for read/write and allows reading and writing. R is read-only. W is write-only.
Timing Chart
The special internal relays are turned on and off in the following manner according to the SD memory card insertion status and
access status.
SD Memory Card Insertion
Status
SD Memory Card Access
Status
ON
Unmount
M8072
SD Memory Card
OFF
ON
SD Memory Card
M8070
Mount Status
OFF
ON
Accessing
M8071
SD Memory Card
OFF
ON
SD Memory Card
Status LED [SD]
OFF
Special Data Registers for the SD Memory Card
The capacity and free space of the SD memory card inserted in the FC6A Series MicroSmart can be checked with special data
registers.
Device
Function
Address
Read SD Memory Card
D8250
Capacity
Read SD Memory Card Free
D8251
Capacity
Note: R/W stands for read/write and allows reading and writing. R is read-only. W is write-only.
When an SD memory card is inserted in the FC6A Series MicroSmart and it
has been recognized and can be used, M8070 is turned on. M8070 is turned
off if no SD memory card has been inserted or if it is not recognized.
M8071 is turned on while the SD memory card is being accessed. It is
turned off when access has finished.
When M8072 is turned on, access to the SD memory card is stopped. To
make an SD memory card accessible that has had access to it stopped,
insert the card once again.
Not
Inserted Inserted
Standby Status
Card Being
Recognized
Slow Flashing ON
This register indicates the capacity of the recognized SD or SDHC (maximum
size 32 GB) memory card in megabytes.
It is 0 when no SD memory card has been inserted or if it is not recognized.
This register indicates the free capacity of the SD memory card in
megabytes.
It is 0 when no SD memory card has been inserted or if it is not recognized.
FC6A S M S A
ERIES ICRO MART
Description
Standby Status
Reading
Writing
Quick Flashing
Description
- -O T U ' M
LL IN NE YPE SER S ANUAL
11: SD M
Access Stopped
Stopping
Access
ON Slow Flashing
FC9Y-B1722
C
EMORY ARD
R/W
R
R/W
R/W
R
11-3