BC Biomedical ESU-2000 Series Guide Manuel d'utilisateur télécharger pdf (Page 38)

The communication protocol provides a means to completely configure and use the

ESU-2050 from a PC. All of the functions available through the front panel can be

performed through the communication ports. All of the measurements made by the

ESU-2050 are accessible as well. This provides for hands free or automated operation

of the ESU-2050.

Communication Ports

The ESU-2050 has two communication ports. Both ports use the same command

format. The Serial port is configured as 115,200 Baud Rate, 8 Data Bits, 1 Stop Bit,

and No Parity. The USB port appears to a PC as a serial port and is configured for

748,800 Baud Rate, 8 Data Bits, 1 Stop Bit, and No Parity.

Command Syntax

The command description is broken into 3 columns; the KEYWORD, the PARAMETER

FORM and COMMENTS.

Keyword

The KEYWORD column provides the name of the command. The actual name of the

command consists of one or more keywords since SCPI commands are based on a

hierarchical structure, also known as a tree system.

In such a system, associated commands are grouped together under a common node in

the hierarchy, analogous to the way leaves at a same level are connected at a common

branch. This and similar branches are connected to fewer and thicker branches, until they

meet at the root of the tree. The closer to the root, the higher a node is considered in the

hierarchy. To activate a particular command, the full path to it must be specified.

This path is represented in the following tables by placing the highest node in the left-most

position. Further nodes are indented one position to the right, below the parent node.

The highest level node of a command is called the Keyword, followed by the Node,

Subnode, and then the value.

COMMUNICATION PROTOCOL

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BC Biomedical ESU-2000 Series Guide Manuel d'utilisateur Page 38