AD-4405A Weighing Indicator Page 57
16. RS-232C Interface
16.1. Specifications
Transmission Asynchronous, bi-directional, half-duplex
Baud rate 600, 1200, 2400, 4800, 9600 bps
Data bits 7 bits, 8 bits
Parity bit 1 bit, Even or Odd (for 7 data bits) or Non parity (for 8 data bits)
Start bit 1 bit
Stop bit 1 bit
Code ASCII
Terminator CR LF, CR (CR: 0Dh, LF: 0Ah)
Connector D-sub 9 pin connector
Circuit and Pin Connection
Pin No. Signal name Direction Description
2 TXD Output Transmit data
3 RXD Input Received data
5 SG - Signal ground
6 DSR Output Data set ready
7 (RTS)
8 (CTS)
- Pin 7 is connected to pin 8
Case FG - Shield (Frame ground)
Other Not used
Bit Format
Data 7 bits
Data 8 bits
16. RS-232C Interface
8
9
(male contact)
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