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9. Serial Interface
9.1 Specifications
a)
Synchronism
b)
Baud rate :
RS-232C type : 110, 150, 300, 600, 1200, 2400, 4800, 9600BPS (Selected by user)
Current Loop Type: 110, 150, 300, 600, 1200BPS (Selected by user)
c)
Composition of one word :
Start bit
Data bit
Parity bit
Stop bit
d)
Signal Polarity :
RS-232C type :
Current Loop Type :
TTL type :
e)
Received Data :
RS-232C & Current Loop (RD signal)
f)
Receiving Control (RD signal)
RS-232C :
Current Loop :
g)
Transmission Control (TD signal)
DC1 code (11H) "X" ON:
DC3 code (13H) "X" OFF:
However, this is valid only for type B input buffer (7K).
CITIZEN
: Asynchronous
: 1 bit
: 7 or 8 bit (Selected by user)
: Odd, even or no parity (Selected by user)
: 1 bit or more
*Mark = Logic "1" (-3V to –12V)
*Space = Logic "0" (+3V to +12V)
*Mark = Logic "1" (Current ON)
*Space = Logic "0" (Current OFF)
*"H" level = Logic "1" Ref. to 8.3.2.
*"L" level = Logic "0"
*Mark = 1
*Space = 0
*Mark: Data Transfer not possible
*Space: Data Transfer possible
*Mark: (Current ON): Data Transfer possible
*Space (Current OFF): Data Transfer not possible
Data Receiving possible
Data Receiving not possible
18
iDP3540/3541 User's Manual
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