IC Memory CardFP2/FP2SH
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7.1 Using the IC Memory Card
7.1 Using the IC Memory Card
7.1.1 Types of IC Memory Cards
There are two types of IC memory cards, an SRAM type and an FROM type. The user
can select the appropriate type for the application at hand.
Type Memory capacity Part number
FROM type 2MB AIC50020
SRAM type 2MB AIC52000
AFP2209
FROM type
No battery backup is required, so this type is ideal for saving programs.
Programs are written using the “Copy File t
o IC Card...” function in the FPWIN GR.
When used as an expansion memory, this type is a read−only card. The “Data Editor”
is used to write data.
SRAM type
This is ideal for use in expanding the data memory area. When used as an expansion
memory, the F13(ICWT) instruction and F12(ICRD) instruction of the sequence pro-
gram are used to write and read data automatically.
About AFP2209
An interchangeable lithium battery is used.
When you use for the first time, install the battery included.
The battery voltage of IC card is detected only once when the CPU unit is powered on.
An error will not be determined if the battery is replaced during power−on.
About AIC52000
An internal secondary battery is provided for backup purposes.
The data on the SRAM type IC memory card is backed up by a chargeable secondary
battery.
When the card is first inserted in the CPU and the power supply is turned on, the battery
is not charged, so an error reading “IC card battery error” occurs. Before using the card
for the first time, always insert it in the CPU and leave it for at least 24 hours before
turning on the power supply. (This fully charges the battery.)
Memory backup time (Ambient temperature of 25 °C)
Model No. Memory retention time The battery life
AFP2209 Approx. 3 years or more
AIC52000 3 months If operated at 25 °C for 12 hours a day with the power supply
off, : Approx. 10 years
The service life is shorter at high temperatures, or if the power
supply is left off or long periods of time.
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