Panasonic AJ-D850 Operating Instructions Manual

Also see for AJ-D850P: Operating instructions

Contents

Panasonic AJ-D850 Operating Instructions Manual Manual pdf 94 page image

RS-232C interface– 94 –3. Software specificationsProtocol1) Communication parametersCommunication system Asynchronous, full duplexCommunication speed 300/600/1200/2400/4800/9600Bit length 7 bit/8 bitStop bit 1 bit/2 bitParity bit NONE/ODD/EVENACK code ACK code returned/ACK code not returnedThe ACK code is what is returned from the VTR to the controller when data hasbeen successfully sent from the controller.The underlining indicates the factory settings.Any changes to the settings can be made using the setup menu items listed below.Communication parameter Setup menu itemCommunication speed No. 205 BAUD RATEBit length No. 206 DATA LENGTHStop bit No. 207 STOP BITParity bit No. 208 PARITYACK code No. 209 RETURN ACK2) Send format [controller (PC) → VTR]n Data format[STX] [command] [:] [data] [ETX]02h XX XX XX 3Ah XX-XX 03h ← (ASCII code: symbols, numbers upper-case letters)20h• [command]: Command identifier; a 3-byte identifier (ASCII code: symbols, numbers, upper-case letters) is sent as thecommand.• [ : ]: This code serves as a delimiter between the command and data.• [data]: Data (ASCII code: symbols, numbers, upper-case letters) can be added in the number of bytes required.n Outline of send procedure from controller1. The send command starts with STX (start of text = 02h). The command is then identified by COMMAND whichfollows and the data is added as required.The format ends with ETX (end of text = 03h).2. When a different command is to be sent, a response is awaited from the VTR, and then the command is sent. (Seepage 95.)3. If STX is sent again before ETX is sent, the receive data buffer inside the VTR is cleared. A command error isreturned to the controller, and the data is newly processed with STX which was received again at the head.