Cascade DataHub™ for Linux and QNX : Version 5.4
	Utilities

`writept`

writept — writes a point to the Cascade DataHub.

Synopsis

writept [-frils] [-d domain] [-S security] [pointname] [pointvalue]

Arguments

pointname: The name of the Cascade DataHub point to write to.
pointvalue: The value to assign to this point.
-d domain: Domain name for the DataHub to write the point to.
-f: Write the point as a floating point number.
-i: Write the point as a short integer.
-l: Write the point as a long integer.
-r: Same as -f.
-s: Write the point as a character string.
-S security: Set the security level for writing.

Returns

On success, nothing; on error, a message.

Description

The writept utility will write or create a value in any accessible Cascade DataHub. Alternate domains can be written to without having to use the -d option by passing point names with the domain:pointname syntax.

Strings containing spaces and special characters must be escaped from the shell appropriately. The point type will be guessed if not specified. The order of guessing is: long, float, string (the default). The guess is considered correct if the entire argument is converted. Long can be specified in standard C style, for example 0x5f for hex, O647 for octal, etc.

The source code for this utility is normally installed in the /usr/cogent/src/datahub directory, and can also be viewed at the Writing data to the Cascade DataHub appendix of the Cogent C API manual.

Dependencies

qserve, nserve, datahub

Example

[sh]$  writept LIC02_sp 55

Writes to the point LIC02_sp the value of 55 in the DataHub default.

[sh]$  writept -d control m38onoff 1

Writes to the point m38onoff the value 1 in the DataHub control.


waiter		xdhview

writept