dacell DN501A - 3. Rs-422 Serial Interface

3. Rs-422 Serial Interface (Option)
RS-422/485 serial interface is more stable for electric noise effect compare with other communication
method, using electric current difference.
But, install isolated place from Power cable or other electric cables and wires, and please use shielded
cable for better performance.
Recommendable communication distance is about 1.2km.
3-1. Connection
DN510N-Series Indicator
PC(D-
Sub 9Pin)
3-2. Signal Format (As Same as “Rs-232C Serial interface)
① . Type : RS-422
②. Communication Method : Half-Duplex, Full Duplex, Asynchronous
③. Serial Baud Rate : Selectable
④. Data Bit : 8(No Parity mode, only)Bit.
⑤. Stop Bit : 1
⑥. Parity Bit : Non, Even, Odd (Selectable)
⑦ Code : ASCII
3-3. Data Protocol (Data Format 1. – Total 18byte) - As same as “Rs-232c Serial Interface
, ,
K g CR LF
Header1 Header2 Data(8) unit
Pin6 RXD+ ------------------- TXD+
Pin7 RXD- -------------------- TXD-
Pin8 TXD+ ------------------- RXD+
Pin9 RXD- -------------------- RXD-
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