Simple instruction set™ control, Host-to-interface communications, Start-up message – Extron electronic Fiber Optics Fox 4G DA8 User Manual

Page 14: Error responses, Timeout, Using the command/response table, Symbol definitions, Simple instruction set, Control, Symbol definitions -5

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FOX 4G DA8 • Remote Control

Remote Control, cont’d

3-4

FOX 4G DA8 • Remote Control

3-5

Simple Instruction Set

Control

Host-to-interface communications

The Extron Simple Instruction Set (SIS) commands consist of

one or more characters per field. No special characters are

required to begin or end a command character sequence. When

a command is valid, the unit executes the command and sends

a response to the host device. All responses from the unit to the

host end with a carriage return and a line feed (CR/LF = ]),

which signals the end of the response character string. A string

is one or more characters.

Start-up message

When a local event, such as a front panel operation or error

condition, occurs, the unit responds by sending a message to the

host. The unit-initiated messages are listed below:
(c) CopyRIghT 2009, ExTRoN ELECTRoNICS Fox 4g DA8,
Vx.xx, 60-927-xx]]
The Fox DA issues the copyright message when it first powers

on. Vx.xx is the firmware version number, 60-927-xx is the part

number.

Error responses

When the unit receives a valid SIS command, it executes the

command and sends a response to the host device. If the unit is

unable to execute the command because the command is invalid

or it contains invalid parameters, the unit returns an error

response to the host. The error response codes are:
E10 - Invalid command]
E12 - Invalid output number]
E13 - Invalid range]

Timeout

pauses of 10 seconds or longer between command ASCII

characters result in a timeout. The command operation is

aborted with no other indication.

Using the command/response table

The command/response table begins on page 3-6.

Lower case

letters are acceptable in the command field.

Symbols are used

throughout the table to represent variables in the command/

response fields. Command and response examples are shown

throughout the table. The ASCII to hEx conversion table below

is for use with the command/response table.

ASCII to HEX Conversion Table

Space

Symbol definitions

Symbols (variables), defined below, are used in the

command/response table on page 3-6. The symbols represent

variables in the unit-initiated messages and the command/

response table fields.

]

= CR/LF (carriage return/line feed)

= space

X!

= output

1 through 8

X@

= Mute status

0 = off (unmuted)

1 = on (muted)

X#

= Firmware version

v

.vv

X$

= Transceiver module status

00000000 = no light input

10000000 = light input

X%

= Temperature

nnn

F = whole degree Fahrenheit

X^

= Transceiver module status

0 = no module installed

1 = multimode

2 = singlemode

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