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RX-Vx700 RS-232C Protocol

Exam

le of RX-Vx700 Control Procedur

[1] Connection Start procedure (AC Plug / RS-232C cable connection)

When the AC plug / RS-232C cable are not connected, the

RX-Vx700 cannot send any data to the host. If the host doesn't

receive a configuration command after sending a Ready command

5 times, the host should disable the RS-232C communication and

send an alert to the graphic user interface (GUI).

[2] AC plug / RS-232C connection check sequence after the

connection has been confirmed in the procedure [1].

If the host doesn't receive a Report Command within 500ms of

sending a command, the host should resend the command. If no

Report Command is received after sending 5 times, check the

AC plug/RS-232 cable ( cf. [1] ).

When the RS-232C cable is disconnected, the commands

generated inside the RX-Vx700 are stored in the sending buffer.

If the stored commands exceed the buffer memory size (buffer

overflow), the RX-Vx700 stops reporting any commands. In this

case, reconnecting the AC plug or Connection Start procedure [1]

will be needed in order to enable the command report.

[3] AC plug connection detection ( after [1],[2] )

When the AC connection is reset, the RX-Vx700 sends a Configuration Command to the host.

The host can display the status of the RX-Vx700 to its GUI.

[4] Getting the status of the RX-Vx700 when the host boots up

At first, the host should send a Ready command and receive the Configuration Command from the RX-Vx700 ( cf. [1] ).

Once the connection is confirmed, the host can send Control Commands to the RX-Vx700.

When the RX-Vx700 is turned off, it accepts only System Commands and Power ON command.

[5] Error transactions after [4]

While sending a control command, if the RX-Vx700 didn't send any corresponding Report Commands regardless of re-trying for 5 times,

the host should clear its send buffer and then check the AC plug / RS-232C connection sequence (cf. [1]). When the RX-Vx700 responds,

the host can display the RX-Vx700 status to its GUI then return to the normal communication sequence. If not, the host should cancel the

communication and report the alert to its GUI.

[1] : AC Plug / RS-232C connection check

(Start transaction)

Send Ready command

to RX-Vx700

Received Configuration

within 500msec ?

Connection is

confirmed.

Already sent the

Ready

Connection

Failed !

Start

Retry

Host

Ready Command

Report Command Enable ( Disable )

Control Command

RX-Vx700

Configuration

Report Command

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RX-Vx700 RS-232C Protocol 1

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