Extron electronic IPL T SF24 user manual Communication and Control, cont’d Customization, Event

Communication and Control, cont’d

Customization

Response

URL Encoded (Web)

ASCII(Telnet)

Command

X54

W X35 X36 , X37 , X38 E

		E
		X38
	,
		X37
	,
		X36
	,
		X35
		Esc
	memory27
Control	event buffer
Event	Read

>
X48	X39	{string}
<see	Evt
	E
	X38	FE
	,
	X39		X44
	,	,
	X37		X37
	,	,
E	X36		X36
	,	,
X35	X35		X35
W W			W
	E
	X38	FE
	,
	X39		X44
	, ,
	X37		X37
	, ,
	X36		X36
E
	, ,
X35	X35		X35
Esc	Esc	Esc
	27	memory27
status27	memory 24	from event
Read event	Write event	Read string

Evt X39

W X39 %2A X35 , X36 , X37 FE

Write string to event memory24 27 Esc X39 * X35 , X36 , X37 FE

Enm#

Est

Ego

W1AE W0AE WAE

Esc 1AE	Esc 0AE	Esc AE
27	27	of events running
Events 24	Events 24	number
Start	Stop	Read

Del•filename			done)
	Zpf Zpx Zpq	Nvr	(respondswhen	X6
		X6

	WfilenameEF		WZFFF	WZXXX	WZQQQ		W1FF	WFF
						subnet mask = 255.255.0.0)
	filename EF
			ZFFF	ZXXX	ZQQQ
							1FF
								FF
Reset (ZAP)/Erase Commands	Erase user-supplied WebEsc	page and files24 28	Erase flash memory24Esc	Reset all device setting to factory24 Esc	Absolute System Reset24Esc	(Includes IP address = 192.168.254.254,	Commit RAM to FlashEsc	View whether RAM needsEsc to be saved to Flash.

In the IPL T interface family, varying degrees of customization are possible. Server side includes make it possible to obtain information from the unit and display the information on Web pages. URL encoding allows you to send information and commands to the unit to change its configuration or provide you with feedback.

Server side includes

Server sides includes (SSIs) are a type of HTML comment that directs the Web server to dynamically generate data for a Web page whenever it is requested. SSIs typically use Extron’s Simple Instruction Set (SIS) to communicate commands to the products or attached control devices. Using SSIs, custom pages can be designed and displayed, with IPL T interface information provided by the SIS commands.

The basic format for an Extron SSI is:

<!—#echo var=”x”—>

Where x is the SIS command to be executed.

The SIS instructions sent to IP Link-enabled products fall into two categories: “host” or “remote”.

1.Host commands instruct the IP Link product to act or respond.

2.Remote commands pass data to an external control port on an IP Link product.

When a Web page is requested, the Web server removes the SSI and replaces it with the answer to the SIS command within quotes.

Server Side Include Using the Host SIS command

	SIS Command
<!--#echo var="	N	"-->
	SIS command
	to be processed
*type with no spaces	by the IP Link

Figure 4-22 — Example of SSI “host” command

In figure 4-22 above, the “N” command is used to request the IP Link product’s part number.

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