BASLER ELECTRIC DECS-200-1C Digital Excitation Control System
BASLER ELECTRIC DECS-200-1C Digital Excitation Control System
ASCII Command Communications
The BE1-GPS100 relay has three independent communications ports for serial communications. A
computer terminal or PC running a terminal emulation program such as Windows HyperTerminal can be
connected to any of the three ports so that commands can be sent to the relay. Communication with the
relay uses a simple ASCII command language. When a command is entered via a serial port, the relay
responds with the appropriate action. ASCII command communication is designed for both human-to
machine interactions and batch download type operations. The following paragraphs briefly describe the
command structure and discuss human-to-machine interactions and batch command text file operations.
The operation of the ASCII commands is described in detail in Section 11. ASCII Command Interface.
Command Structure
An ASCII command consists of a command string made up of one or two letters followed by a hyphen
and an object name. The first letter specifies the general command function and the second a sub-group.
The object name is the specific function for which the command is intended. A command string entered
by itself is a read command. A command string followed by an equal sign and one or more parameters is
a write command. The general command groups are organized into five major groups plus several
miscellaneous commands. These commands are as follows:
C CONTROL. Commands to perform select before operate control actions such as tripping and closing
the circuit breaker, changing the active setting group, etc. Subgroups include S for Select and O for
Operate.
G GLOBAL. Perform global operations that do not fall into the other general groups such as password
security. Subgroups include: S for security settings.
M METERING. Read all real time metering values. This general command group has no subgroups.
P
PROGRAM. Subgroup command to read or program a setting.
R REPORTS. Read and reset reporting functions such as time and date, demand registers, breaker
duty statistics, etc. Subgroups include: A for Alarm functions, B for Breaker monitoring functions,
Demand recording functions, F for Fault summary reporting functions, G for General information,
and S for sequence of events recorder functions.
S SETTINGS. Set all setting parameters that govern the functioning of the relay. Subgroups include:
0.1. for settings in setting groups, A for alarm settings, B for breaker monitoring settings, G for
general settings, and L for logic settings.
MISCELLANEOUS. Miscellaneous commands include ACCESS, EXIT, and HELP.
Examples of object names would be 51N for the neutral inverse time overcurrent function or PIA for the A
phase, peak current demand register.
For example, to check the 51N pickup setting in Setting Group 1. you would enter S1-51N for Setting
Group 1. 51N. The relay would respond with the current pickup, time dial and curve settings for the 51N
function. To edit these settings the same command would be used with an = followed by the new settings
and the ENTER pushbutton. Note that it is necessary to use the ACCESS and EXIT commands when
using the write version of these commands.
ASCII Command Operations
Using ASCII commands, settings can be read and changed on a function-by-function basis. The
mnemonic format of the commands helps you interact with the relay. It is not necessary to remember all
of the object names. Most commands do not require that you specify a complete object name. If the first
two letters of a command are entered, the relay will respond with all applicable object names.
Example 1:
Obtain a breaker operations count by entering RB (Report Breaker). The BE1-GPS100
responds with the operations counter value along with all other breaker report objects. If
you know that the object name for the breaker operations counter is OPCNTR, you can
enter RB-OPCNTR and read only the number of breaker operations.
Partial object names are also supported. This allows multiple objects to be read or reset at the same time.
Example 2:
Read all peak-since-reset demand registers. Entering RD-PI (report demand – peak
current) will return demand values and time stamps for phase A, B, C, neutral and
negative-sequence current. To read only the neutral demand value, the full object name
(RD-PIN) is entered. Entering RD-PI=0 resets all five of the peak-since-reset demand
registers.
Batch Command Text File Operations
With a few exceptions, each function of the relay uses one command to set it and each setting command
operates on all of the parameters required by that function. See the example mentioned previously in the
paragraph titled Command Structure. This format results in a great many commands to fully set the relay.
In addition, the process of setting the relay does not use a prompting mode where the relay prompts you
for each parameter in turn until you exit the setting process. For these reasons, a method for setting the
relay using batch text files is recommended.
In batch download type operations, the user creates an ASCII text file of commands and sends it to the
relay. To facilitate this process, the response from a multiple read command is output from the BE1
GPS100 in command format. Therefore, the user need only enter S for Set (with no subgroup) and the
relay responds with all of the setting commands and their associated parameters. If the user enters S1 for
Setting Group 1. the relay responds with all of the setting commands for setting group 1. The user can
capture this response to a file, edit it using any ASCII text editor, and then send the file back to the relay.
See Section 11. ASCII Command Interface, for a more detailed discussion of how to use ASCII text files
for setting the relay.
BESTCOMS™ for BE1-GPS100. Graphical User Interface
Basler Electric’s graphical user interface (GUI) software is an alternative method for quickly developing
setting files in a user-friendly, Windows based environment. Using the GUI, you may prepare setting files
off-line (without being connected to the relay) and then upload the settings to the relay at your
convenience. These settings include protection and control, operating and logic, breaker monitoring,
metering, and fault recording. Engineering personnel can develop, test, and replicate the settings before
exporting it to a file and transmitting the file to technical personnel in the field. On the field end, the
technician simply imports the file into the BESTCOMS database and uploads the file to the relay where it
is stored in nonvolatile memory.
The GUI also has the same preprogrammed logic schemes that are stored in the relay. This gives the
engineer the option (off-line) of developing his setting file using a preprogrammed logic scheme,