Residential Control Systems TXB16 Manual do Proprietário descarregar pdf (Página 195)

Chapter 16 Serial Interface 181

The general data formats for the three types of transmissions are described below.

Controller Report Messages

The controller can be set up to report different types of events when they occur, such as:

• X-10 command received

• IR signal received

• Input port changed state

• Scheduled event has occurred

To use this feature, the desired report mode(s) must first be enabled. This can be done from the PC

program or within a schedule, as described in chapter 15, Controller Functions.

Report Message Format

When the controller is configured to report events, it will transmit a new message every time the event

occurs. The message follows the following format:

XX <Message> {CR} {LF} {Terminator}

- “XX” is the Message ID Number. Each type of report message from the controller has a unique ID

number in a 2-digit hexadecimal format. Each digit will be a hexadecimal value (numbers 0-9 or

letters A-F). When converted to decimal, they represent the numbers 0 through 255. See Table 16-

1 for the Message ID Numbers of each type of report message. They range from 80h through A3h.

By reading these two bytes, a user program can quickly identify the type of message from the

controller.

- “<Message>” will contain a text description of the event. Typical messages are:

IR Signal #85 Received

Input Port #4 Changed High

Scheduled Event #2A Occurred

- {CR} signifies that a carriage return is sent.

- {LF} signifies that a line feed is sent.

- {Terminator} signifies that a single-byte terminator code is sent. The byte has a value 1d, which is

the ASCII code SOH. The terminator is provided to make it easier for a PC program to read and

interpret the messages from the controller.

NOTE: The carriage return and line feed do not actually appear on the screen if you’re using a

terminal emulation program. Rather, they cause the cursor to move to the beginning of the next line.

The terminator code (ASCII code SOH) also will not appear on some terminal programs (although

other programs may display it as a special symbol). The PC software's built-in terminal emulator

strips this character out.

ID # (Hex) MEANING

80 Power Restored

81 Self Test Passed

82 Self Test Failed

1 2 ... 190 191 192 193 194 195 196 197 198 199 200 ... 328 329

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