Basler BE1-CDS220, Instruction Manual

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11-2 ASCII Command Interface BE1-CDS220
ASCII COMMAND INTERFACE
A computer terminal or PC running terminal emulation software can be used at any of the three serial
ports to send commands to the relay. Simple ASCII command language is used to communicate with the
relay. When the relay receives a command, it responds with the appropriate action. ASCII commands can
be used in human to machine interactions and in batch download type operations.
Command Structure
An ASCII command consists of a string made up of one or two letters followed by a hyphen and an object
name:
xy-object name
x Specifies the general command function.
y Specifies the command subgroup.
Object Name Defines the specific object to which the command refers.
Examples of object names include 51N (neutral inverse time overcurrent function) and PIA (phase A peak
current demand register). A command string entered alone is a read command. A command string
followed by an equal sign (=) and one or more parameters is a write command.
General command functions are organized into five major groups plus one group of miscellaneous
commands.
CONTROL (C): Control commands perform select-before-operate control actions such as circuit
breaker tripping and closing and active setting group changes. Subgroups
include Select (S) and Operate (O).
GLOBAL (G): One Global command performs operations that don't fall into the other general
groups. The command for reading and changing passwords (GS-PW) is the only
global command available.
METERING (M): Commands in this group report all real-time metering values. No subgroup is
used with metering commands.
REPORTS (R): Reports commands read and reset reporting functions such as time and date,
demand registers and breaker duty statistics. Subgroups include Alarms (A),
Breaker Monitoring (B), Demand Recording (D), Fault Summary Reporting (F),
General Information (G), Sequence of Events Recorder (S), and Oscillography
(O).
SETTINGS (S): This group contains all of the setting parameters that govern relay function.
Subgroups include Setting Groups 0, 1, 2, and 3 (0, 1, 2, 3), Protection Settings
(P) not in setting groups, Alarm Settings (A), Breaker Monitor Settings (B),
General Settings (G), and Logic Settings (L).
MISCELLANEOUS: Miscellaneous commands include Access, Exit, and Help. Note that only the first
letter of these commands must be entered; entering the full command name is
optional.
Using the ASCII Command Interface
Human to Machine 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 isn't necessary to remember all of
the object names. Most commands don't 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.
ASCII Command Examples:
Example 1. Obtain a breaker operations count by entering RB (Report Breaker). The BE1-CDS220
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.