Denso GT10Q-SR User Manual

Also see for GT10Q-HR: Operator's manual

Contents

35Chapter 9 Communication9.1 RS-232C interfaceThe scanner uses asynchronous data transmission and communicates with the host PC or external equipment via theRS-232C. You may set various communications conditions using the QR-coded parameter menu or configurationsoftware. Code data read is transferred in the following format.(1) Communications protocolYou can select either non-acknowledge mode or ACK/NAK mode.Non-acknowledge mode (default)If the CTS signal is at a high level (Enable transmission), the scanner transmits code data read.NOTE: The configuration software provides a choice of CTS timeout settings from 100 ms to 9.9 s in 100-ms incrementsand two CTS signal control choices Yes and No.ACK/NAK modeIf the CTS signal is at high level (Enable transmission), the scanner transmits code data read. After that, the scanner waitsfor and then processes a response. If the response is an ACK, the scanner normally ends the transmission; if it is a NAK,the scanner transmits the code data again.NOTE: The configuration software provides a choice of CTS timeout and ACK/NAK response time settings each from100 ms to 9.9 s in 100-ms increments.(2) Transmission speedThere are six transmission speeds available, ranging from 4800 bps to 115200 bps (default: 38400 bps).(3) CharactersCharacters that the scanner transfers are all ASCII codes. The frame format has the following parameters.Data bits: 7 bits or 8 bits (default)Parity: Odd, Even, or None (default)Stop bits: 1 bit (default) or 2 bitsNOTE: When data contains binary data or 2-byte codes, selecting "7 bits" for the data bits transfers the 2-byte codes withthe most significant bits trimmed.