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ENGLISH
RS-232C CONTROL SPECIFICATION
GLOBAL DESCRIPTION
OVERVIEW
A Host controller can control or watch out the product as a Slave very easily via the communication cable.
BLOCK DIAGRAM
HOST
(Controller)
RS232C cable (straight)
SLAVE
(The product)
Connector
D-SUB (9pin, male)
* The product connector is using D-SUB 9pin male.
* RS232C cable must use D-SUB 9pin female to connect the products.
INTERFACE CONNECTION SPECIFICATION OF THE PRODUCT
Processor Interface Signal name Connection device D-Sub Pin Connecter
- N.C. - 1
RS232C
D-SUB
(9pin,male)
12345
6789
UART
TxD (output)
RS232C Level shift driver
2
RxD (input) 3
- N.C. - 4
- GND GND 5
- N.C. - 6
- N.C. - 7
- N.C. - 8
- N.C. - 9
DETAILED DESCRIPTION
The interface specifi cation between the product and a Host controller is described below.
CONNECTION FORMAT
Physical connection
TxD
RxD
GND
RxD
TxD
GND
Host (Controller)
(Serial setting <RS232C basic>)
Baud Rate : 9600bps
Data Bits : 8bit
Parity : None
Stop bit : 1bit
Handshaking : None
Slave (the product)
• Data transmission sequence from Host to Slave
/
,
TxD RxD
RxD TxD
Host (Controller) Slave (The product)
1. Host starts a data transmission from TxD.
2. Host performs the data transmission of the number of required bytes, and ends a transmission.
• Data transmission sequence from Slave to Host
/
,
TxD RxD
RxD TxD
Host (Controller) Slave (The product)
1. Slave starts a data transmission from TxD.
2. Slave performs the data transmission of the number of required bytes, and ends a transmission.