E-922-1-E
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5.3 Soft Switch
Soft switch is a ROM memory table located on the internal board. The functions of the instrument are selected
by the data written on the ROM. Communication parameters and communication modes are categorized by
the function setting table in the ROM.
(1) Communication parameters
Data length, parity, and stop bit length for serial communication are specified.
Address: 00F2h
Range: 0 to 9 (Decimal)
Value
Data length
Parity
Stop bit length
0
7
Odd
1
1
7
Odd
2
2
7
Even
1
3
7
Even
2
4
8
Odd
1
5
8
Odd
2
6
8
Even
1
7
8
Even
2
8
8
None
1
9
8
None
2
(2) Switching the communication mode
Address: 00F3h
Range: 0, 1 (Decimal)
0: Active mode
When all transmit data are collected, the data are sent to the host system.
1: Polling mode
When all transmit data are collected, the data are sent to the host system by the data request command
from the host system.
Host system
Data
transmission
Normal
reception
Card reader
Active mode
Host system
Data request
command
Card reader
Polling mode
Send data by
the data request
command
Data
transmission
Data transmission
is terminated by
the normal
receive response.
Fig. 5.3