caennet

DESCRIPTION

The caennet package provides Tcl scripted access to modules that are controlled by CAEN's proprietary device control network. The package requires a CAEN V288 Caennet controller be installed in at least one of the VME crates attached to the host.

All package commands are defined in the caennet namespace. This can be imported into the current or global namespace via the namespace import command.

PACKAGE COMMANDS

package require caennet

Loads the caennet package. This is required to make the package commands known to the Tcl interpreter.

caennet::create baseaddr ?vmecrate?

Connects to the CAEN V288 controller at baseaddr in the VME create specified by vmecrate. If vmecrate is not provided, it defaults to zero. The command returns a string that identifies the controller in subsequent operations.

caennet::delete controller

Deletes the connection to a CAEN V288 controller for which caennet::create returned the string controller.

caennet::reset controller

Resets a CAENnet controller. controller is a string that was returned from a previous invocation of caennet::create.

caennet::send controller slave code ?data?

Peforms a CAENnet transaction. Each transaction consists of a message sent to a node on the network, and a response either from the node or from the controller, if the node does not exist. controller is the controller handle that was returned by the call to caennet::create. slave is the slave address on the network. This is usually encoded in thumbwheels or rotary switches on the slaves front panel. code is the operation code of the message. The operation code uasually selects the operation and meaning/presence of any subsequent data. code is the function code to perform. This will be slave specific and will determine the amount and meaning of the data parameter, which can be thought of as parameters to the function code.

The operation returns the data sent back by the slave as a list of decimal integers. Each integer is a byte of data.