ST3000 Series Hardware Manual
3-4
3.1.2
Performance Specifications
Performance Specifications
AST-3201A
AST-3211A
Application
*1
*1.
It is user active capacity.
FLASH EPROM 6MB
Data Backup
SRAM 320K byte
Used lithium battery for backup memory
Interf
ace
Serial
Interface
COM1: RS232C
Asynchronous Transmission
Data Length: 7 bit/8 bit
Parity: none, Odd or Even
Stop Bit: 1bit/2bit
Data transmission Speed:
2400 bps to 115.2Kbps
Connector: DSUB-9pin plug
COM1: RS232C
Asynchronous Transmission
Data Length: 7 bit/8 bit
Parity: none, Odd or Even
Stop Bit: 1bit/2bit
Data transmission Speed:
2400 bps to 115.2Kbps
Connector: DSUB-9pin plug
COM2: RS422/RS485
*2
Asynchronous Transmission
Data Length: 7 bit/8 bit
Parity: none, Odd or Even
Stop Bit: 1bit/2bit
Data transmission Speed:
2400 bps to 115.2 Kbps (RS422/RS485)
187.5 Kbps (MPI)
Connector: DSUB-9pin plug
*2.
AST-3201A units with revision code “C” or later are compliant with RS485.
COM2: RS485(MPI only)
Asynchronous Transmission
Data Length: 7bit/8bit
Parity: none, Odd or Even
Stop Bit: 1bit/2bit
Data transmission Speed:
187.5 Kbps (MPI)
Connector: DSUB-9pin socket
USB Host
Interface
Complies with USB 1.1. (TYPE-A conn.) x 1
Power Supply Voltage: DC5V
±
5%
Output Current: 500mA (Max.)
Communication Distance: 5m (Max.)
Clock
Accuracy
*3
*3.
The ST’s internal clock has a slight error. At normal operating temperatures and conditions,
with the ST operating from its lithium battery, the degree of error is 65 seconds per month.
Variations in operating conditions and battery life can cause this error to vary from -380 to +90
seconds per month. For systems where this degree of error will be a problem, the user should
be sure to monitor this error and make adjustments when required.
±
65 seconds/ month (at room temperature)
•
When the message “RAAA051 Low battery” is displayed, supply power to the display
unit and fully charge the battery. The battery charges within 24 hours to a level which
allows backup operation. Completing a full charge requires about 96 hours (4 days).
•
A Lithium battery’s lifetime is: 10 years when the battery’s ambient temperature is 40°C
or less. 4.1 years when the battery’s ambient temperature is 50°C or less. 1.5 years when
the battery’s ambient temperature is 60°C or less.
When used for backup:
Approximately 100 days, with a fully charged battery.
Approximately 6 days, with a half-charged battery.
SEE
