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2.5 Interface Specification
2.5.1 RS-232C Serial Interface
2.5.1.1 RS-232C Specification
Item
Description
Remark
Data Transmission
Serial
Synchronization
Asynchronous
Hand Shaking
(Flow Control)
H/W
: DTR / DSR
S/W
: XON / XOFF
XON : ASC Code 11h
XOFF : ASC Code 13h
Signal Level
Logic”1” (MARK)
: -3V ~ -15V
Logic”0” (SPACE)
: +3V ~ +15V
Baud Rate
2400 / 4800 / 9600 / 14400 / 19200 / 38400 / 57600 / 115200 bps
Default 115200 bps
Data Word Length
7 Bit / 8 Bit
Parity
None / Even / Odd
Connector
DB25P Female / DB9P Female / RJ45 Modular Jack (I/F PBA)
The Hand Shaking(Flow Control) / Baud Rate / Data Word Length / Parity functions depend on the DIP switch settings. Refer to “Chap. 3.2.”
2.5.1.2 RS-232C(DSUB25) Signal Description
PIN NO
DSUB25(Female)
Signal Name
Direction
Function
3 RXD
IN
Receive
Data
2 TXD
OUT
Transmit
Data
20 DTR
OUT
Data
Set
Ready
7 GND
-
-
6 DSR
IN
Data
Terminal
Ready
4 RTS
OUT
Request
To
Send
5 CTS
IN
Clear
To
Send
13
25
1
14
( EXPLODED VIEW )
SR 85 - Service Manual
Содержание SR 85
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