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Others, Rs-232c interface, Rs-232c specifications – JVC D-ILA DLA-HD350 User Manual

Page 50: Command format, External control)

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Others

50

RS-232C Interface

Control of this unit via a computer is possible by connecting the computer to this unit with a RS-232C

cross cable (D-Sub 9 pin).

PC refers to the controller such as a personal computer.

D6 D7

D4 D5

D2 D3

D0 D1

Command Format

The command between this unit and the computer consists of “Header”, “Unit ID”, “Command”, “Data” and “End”.

Header (1 byte), Unit ID (2 bytes), Command (2 bytes), Data (n bytes), End (1 byte)

Header

This binary code indicates the start of communication.

Binary code

Type

Description

1

Operating command

PC→This unit

F

Reference command

PC→This unit

0

Response command

This unit→PC

06

ACK

This unit→PC

(When the command is accepted without error, it returns to

PC)

Unit ID

This code specifies the unit. The binary code is fixed at “8901”.

RS-232C Specifications

Pin No.

Signal

Function

Signal Direction

RxD

Receive data

PC→This unit

TxD

Transmit data

This unit→PC

5

GND

Signal ground

-

1,,6 - 9

N/C

-

-

Mode

Non-synchronous

Character Length

8 bit

Parity

None

Start Bit

1

Stop Bit

1

Data rate

1900 bps

Data format

Binary

T

his unit

Start Bit

Stop Bit