Schneider Electric 4000 manual Appendix B-Using the Command Interface April, 187

63230-300-212	Appendix B—Using the Command Interface
April 2001	Operating Outputs from the Command Interface

OPERATING OUTPUTS FROM THE COMMAND INTERFACE

USING THE COMMAND INTERFACE TO CHANGE CONFIGURATION REGISTERS

To operate an output from the command interface, first identify the relay using the I/O point number. Then, set the output to external control. For example, to energize the last output on Option Card B, write the commands as follows:

1.Write number 26 to register 8001.

2.Write command code 3310 to register 8000 to set the relay to external control.

3.Write command code 3321 to register 8000.

If you look in Table B– 2 on page 183, you’ll see that command code 3310 sets the relay to external control and command code 3321 is listed as the command used to energize a relay. Command codes 3310–3381 are for use with inputs and outputs.

You can also use the command interface to change values in selected metering-related registers, such as synchronizing the time of day of the clock or resetting generic demand.

Two commands, 9020 and 9021, work together as part of the command interface procedure when you use it to change circuit monitor configuration. You must first issue command 9020 to enter into setup mode, change the register, and then issue 9021 to save your changes and exit setup mode.

Only one setup session is allowed at a time. While in this mode, if the circuit monitor detects more than two minutes of inactivity, that is, if you do not write any register values or press any buttons on the display, the circuit monitor will timeout and restore the original configuration values. All changes will be lost. Also, if the circuit monitor loses power or communications while in setup mode, your changes will be lost.

The general procedure for changing configuration registers using the command interface is as follows:

1.Issue command 9020 in register 8000 to enter into the setup mode.

2.Make changes to the appropriate register by writing the new value to that register. Perform register writes to all registers that you want to change. For instructions on reading and writing registers, see “Reading and Writing Registers” on page 44 in Chapter 3—Operation.

3.To save the changes, write the value 1 to register 8001.

NOTE: Writing any other value except 1 to register 8001 lets you exit setup mode without saving your changes.

4.Issue command 9021 in register 8000 to initiate the save and reset the circuit monitor.

For example, the procedure to change the demand interval for current is as follows:

1.Issue command code 9020.

2.Write the new demand interval to register 1801.

3.Write 1 to register 8001.

4.Issue command code 9021.

See Appendix A—Abbreviated Register Listing on page 127 for those registers that require you to enter setup mode to make changes to the registers.

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