Notation conventions, Command descriptions, Cancel – Elo TouchSystems 1525L User Manual

Page 105

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MagTek Device Drivers for Windows


102

Examples:

000000000011111111112222222222
012345678901234567890123456789
/read

-00082

/get

trk_enable

110


NOTATION CONVENTIONS

The following conventions are used in the tables that follow.

Fixed Size (Bold)

Used to represent literals (symbols, exactly as sent or received
from driver)

Italic

Used to represent placeholders (variable fields)

[]

Expression parts in brackets are optional. The brackets are never
a part of the syntax

<LF>

ASCII control character. The only ASCII control characters used
are <LF> (0x0A) and <CR> (0x0D).

(a|b)

Means that the expression can be either a or b, e.g., X(1|2) means
either X1 or X2. The parentheses and the | are never part of the
syntax.


COMMAND DESCRIPTIONS

The following list of commands includes function, syntax, errors, remarks, and examples as
applicable.

cancel

Function

Cancel a command.

Syntax

/cancel

[cmd]

The optional cmd can be any of the transaction commands such as:

/cancel rawrecv
/cancel rawxact
/cancel read
/cancel write

If cmd is omitted, any pending commands will be canceled.

Errors

If the specified command is not active, the command is ignored and there is no
response.

Remarks

The command being canceled will send a response immediately.

Example

If a

read

command has been issued but the operation is to be aborted:

Command

/cancel read

<LF>

Response

/read

-00082

<LF>

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