Basler Electric BE1-79A - Manual (Page 35)

9310200990 Rev J BE1-79A Communication Commands 4-1
SECTION 4 • COMMUNICATION COMMANDS
Introduction
Communication commands are sent to the BE1-79A through a standard RS-232 (DB-9) connector located
on the front panel. The BE1-79A ASCII communication protocol is compatible with readily available
terminal/modem software such as the HyperTerminal application provided with the Windows® PC
operating system. Information about configuring HyperTerminal and Terminal for communication with the
BE1-79A is provided in Appendix B, Terminal Communication.
Communication Port Parameters
The following parameters apply to the BE1-79A communication port:
•
Fixed baud rate of 9600
• Data bits fixed at 8
• Parity is fixed at NONE (N)
• Number of stop bits is fixed at 1
• Half duplex operation is supported
More information about BE1-79A communication interface requirements is provided in Section 5,
Installation and Configuration.
ASCII Command Format
Each communication command, <CMD>, consists of an ASCII string terminated by a carriage return,
<CR>. A line feed, <LF>, is optional.
Command Format
The BE1-79A uses a command format of <CMD>[<;>CMD…]<CR>[LF>]. Command components are
defined as follows.
[ ]
Brackets identify optional parameters. The brackets are not part of the command.
< > Separators are used for clarity. The separators are not part of the command.
CMD <name>[n][<=><setting-x>…[<,><setting-x>]]
Where:
Name
Command name. Refer to Command Descriptions for more information.
N Optional command object. If more than one object is available and n is omitted, the
command applies to all objects.
= Used to indicate that the command is to change data or settings.
Setting-x Command setting(s)
, Commas are used as setting separators
CR A carriage return is used to end a command and start command execution.
LF A line feed may be used for clarity. It is ignored by the relay.
Spaces One or more spaces may be added between entries for clarity if desired.
Command Response Format
The BE1-79A uses a command response format of [<response>][<ACK>]. Command components are
defined as follows.
response
Determined by CMD.
ACK “>” is returned for a valid command, “?” is returned for an invalid command.
Commands received by the BE1-79A consist of two types: requests for information and changes to
operating parameters. Commands to change parameters are identified by and equal sign (=). The
operating parameters to the right of the equal sign are intended to replace the current operating
parameters related to the command.
Some commands may pertain to multiple items. In that case, a numeric identifier is used after the
command name to specify a single item. If the identifier is omitted, the command is applied to all possible