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.
DETAILED DESCRIPTION
The interface specification between the product and a Host controller is described below.
CONNECTION FORMAT
Physical connection
Host (Controller) | Slave (the product) |
ENGLISH
BLOCK DIAGRAM
HOST
(Controller)
RS232C cable (straight)
SLAVE
(The product)
Connector
TxD 
RxD
(Serial setting <RS232C basic>)
Baud Rate | : 9600bps |
Data Bits | : 8bit |
*The product connector is using
*RS232C cable must use
INTERFACE CONNECTION SPECIFICATION OF THE PRODUCT
Processor Interface | Signal name | Connection device | Connecter | ||
- | N.C. | - | 1 | RS232C | |
UART | TxD (output) | RS232C Level shift driver | 2 | ||
RxD (input) | 3 | ||||
|
| (9pin,male) | |||
- | N.C. | - | 4 | ||
| |||||
- | GND | GND | 5 | 1 2 3 4 5 | |
- | N.C. | - | 6 |
| |
- | N.C. | - | 7 |
|
RxD 
TxD
GND |
| GND |
|
•Data transmission sequence from Host to Slave Host (Controller)
TxD | / |
| |
RxD | , |
|
Parity | : None |
Stop bit | : 1bit |
Handshaking | : None |
Slave (The product)
RxD
TxD
- | N.C. | - | 8 | 6 7 8 9 | |
- | N.C. | - | 9 | ||
|
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 |
| |
Host (Controller) |
| Slave (The product) |
TxD | / | RxD |
| ||
RxD | , | TxD |
| ||
1.Slave starts a data transmission from TxD.
2.Slave performs the data transmission of the number of required bytes, and ends a transmission.
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