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Ascii command communications, Command structure, Ascii command communications -4 – Basler Electric BE1-CDS240 Quick Start User Manual

Page 6: Figure 2-2. 51 hmi screen -4

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4. REPORTS. Display and resetting of report information such as time and date, demand registers,

breaker duty statistics, etc.

5. PROTECTION. Display and setting of protective function setting parameters such as logic

scheme, pickups, time delays, etc.

6. GENERAL SETTINGS. Display and setting of non-protective function setting parameters such as

communications, LCD contrast, and CT ratio.

Each screen in the menu tree displays the path in the upper left hand corner of the screen. Additionally,

each screen is assigned a number in the HMI section. The path indicates the branch and level in the

menu tree structure. This path should help you to keep track of where you are when you leave the menu

tree top level. You scroll through each level of the menu tree by using the right and left scrolling

pushbuttons. To go to a level of detail, you use the down scrolling pushbutton. Each time you go to a

lower level in the menu tree, another string is added to the path and separated by a backslash.
For example, to check or change the 51N pickup setting in Setting Group 3, you would press the right or

left scrolling pushbuttons to get to Screen \PROT - PROTECTION. You would then press the down

scrolling pushbutton to get to the next level of detail and the right or left scrolling pushbutton to get to

Screen \PROT\SG3 - SETTING GROUP 3. To continue, you would press the down and then the right or

left scrolling pushbuttons to get to Screen \PROT\SG3\51 INVERSE TIME OVERCURRENT and then

Screen \PROT\SG3\51\51 - 51 Settings. On the screen shown in Figure 2-2, the pickup, time dial and

curve settings for the 51P/N/Q functions can be read and/or edited. To return to the top level from this

location, you would press the Up scrolling pushbutton three times.

Figure 2-2. 51 HMI Screen

ASCII Command Communications

The BE1-CDS240 relay has three independent communications ports for serial communications. Basler

Terminal in BESTCOMS can be connected to any of the three ports so that the user may send commands

to the relay. Alternatively, a computer terminal or PC running a terminal emulation program such as

Windows Terminal can be used in the same manner. 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. The ASCII command communications is designed for use in both human-to-machine

interactions and in batch download type operations. The following paragraphs briefly describe the

command structure and then discuss human-to-machine interactions and batch command text file

operations for interacting with the relay. 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-

grouping. The object name is the specific function for which the command is intended. If the command

string is entered by itself, it is a read command. If the command string is entered followed by an equal

sign and one or more parameters, it is a write command. The general command groupings are organized

into six 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. Sub-groupings include S for Select and O

for Operate.

G GLOBAL. Perform global operations that do not fall into the other general groupings such as

password security. Sub-groupings include S for security settings.

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BE1-CDS240 Quick Start

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