Panasonic WJ-HD200 Operating Instructions Manual

Also see for WJHD200 - Digital Disk Recorder: Operating instructions

Contents

Panasonic WJ-HD200 Operating Instructions Manual Manual pdf 81 page image

82■ RS-232C Communication ProtocolThe following pages detail the elements for communication between the Digital Disk Recorder and the personal computer. Besure to select VCR for PROTOCOL in the COMMUNICATION SETUP window. For BAUD RATE, DATA BIT and PARITY settings,refer to COMMUNICATION SETUP. For cable connection refer to RS-232C CONNECTION.1. Transmission CommandThe PC sends messages to the Recorder in the format shown below. Also refer to the command table shown later.[p] stands for parameter. Parameters are omitted when the command does not need to specify them.2. Response CommandThe Recorder returns messages in reply to the PC’s messages with the following formats.(1) Reception CommandWhen the reception was completed successfully, the Recorder sends back the “ACK code 06H” to the PC, and then theresponse command below.Parameters are omitted when the command format includes neither data nor status to send back.(2) Reception errorThe recorder sends back the “NAK code 15H”, followed by the parameters shown below. The Recorder then resets thereception buffer and enters waiting mode for the next message. Parameter “e” identifies the error status.“e” value 1: Parity error (31H)2: Framing error (33H)3: Overrun error (34H)(3) Parameter errorThe Recorder returns the “ACK code 06H”, if the transmission code was not processed properly for some reason, followedby an error code as shown below.Note: The Recorder returns [ACK] or [NAK] to the PC within 20 ms after the reception of [ETX] in a transmission.[STX] ERE [ETX]CodeCodeCode(02H) ( ) – – – – – – – – – – – – – – – – – ( ) (03H)[STX] [Transmission Command] : [p1] : [p2] : : [pn] [ETX]ASCII(02H) ( ) – – – – – – – – – – – – – – – ( ) (03H)[STX] [Response Command] : [p1] : [p2] : : [pn] [ETX]ASCII[NAK] [e]ASCII (15H)Code(02H) (45H) (03H)ASCII