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Section1 Introduction

This manual explains how to control the AR-3000 using RS-232C. For details on the operation of the AR-3000 itself, refer to the AR-3000 owner's manual. This manual assumes that you have a basic understanding of computers. For explanations of computer terminology or operation, please refer to commercially available manuals.

The contents of this manual are subject to change without notice.

1.1 If You Have Been Using the AR-2000

The AR-3000's command set, which employs RS-232C, is designed to be backwardly compatible with the AR-2000. This means it is possible for you to continue using the control system you have used with the AR-2000. However, since the AR-3000 and AR-2000 are not functionally identical in every respect, some functions cannot be used. For more information, check the included specifications.

Section2 Setup

2.1 About the RS-232C Interface

RS-232C is a standardized type of serial interface. The connections which are used by the AR-3000 are discussed below.

2.1.1 Connector and Cable

Connector specifications

*The AR-3000 is equipped with a D-sub 9-pin type female connector. In the case of connecting by female – female crossing cable, use gender changer.

Cable specifications *2

*1

*1

*1 This is already connected in inside of the AR-3000. (4 – 6, 7 - 8 )

*2 At least three line(RXD, TXD, GND) should be connected as shown in a figure.

2.2 Handshaking

If the AR-3000's processing speed is slower than the speed at which data is transmitted from the computer, measures must be taken to avoid data loss. Conversely, data loss will also occur if data is transmitted from the AR-3000 faster than the computer can process it.

For these reasons, the AR-3000 uses “Xon/Xoff” handshaking.

The external computer can control transmission from the AR-3000 in the same way. The ASCII code signal name for Xon is DC1, which is 11H.

The ASCII code signal name for Xoff is DC3, which is 13H.

AR-3000 RS-232C Reference -1

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Roland RS 232C manual If You Have Been Using the AR-2000, About the RS-232C Interface, Connector and Cable, Handshaking