3-2. RS-232C Control
3-2-1. Outline
JP2pro_rev.S has a D-SUB 9 pin male connector conforms to EIA RS-232C remote
control protocol. This connector is used for the service use normally, but upon
customers request, it can be used for connections with various controllers.
The following description explains the RS-232C serial transmission protocol.
3-2-2. Architecture of the serial transmission data.
・
Asynchronous bit serial transmission.
・
Character length: 8 bits
・
Stop bit: 2 bits
・
Parity: EVEN PARITY
・
Data structure: 1 Start bit+8 Data bits+1 Parity bit+2 Stop bit
Start
bit
D0
(LSB)
D1 D2
D3
D4
D5
D6
D7
(MSB)
Parity
(Even)
Space
Mark
(Note 1)
Parity: The sum of data D0
〜
D7 and the Parity bit is even number.
3-2-3. Connector Pin Assignment
D-SUB 9-pin male connector pin assignment is as follows
Pin
number
Signal
1
CD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
D-SUB
9
-pin
8 CTS
Male 9 RI
1
5
6
9
3-2-4. Transmission Protocol and Commands
The transmission protocol and commands are user defined.
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