Schneider Electric 4000 Conditional Energy, Command Interface Control Digital Input Control, 188

Appendix B—Using the Command Interface	63230-300-212
Conditional Energy	April 2001

CONDITIONAL ENERGY

Command Interface Control

Digital Input Control

Circuit monitor registers 1728–1744 are conditional energy registers.

Conditional energy can be controlled in one of two ways:

•Over the communications link, by writing commands to the circuit monitor’s command interface, or

•By a digital input—for example, conditional energy accumulates when the assigned digital input is on, but does not accumulate when the digital input is off.

The following procedures tell how to set up conditional energy for command interface control, and for digital input control. The procedures refer to register numbers and command codes. For a listing of circuit monitor registers, see Appendix A—Abbreviated Register Listing on page 127. For a listing of command codes, see Table B– 2 on page 183 in this chapter.

Set Control—To set control of conditional energy to the command interface:

1.Write command code 9020 to register 8000.

2.In register 3227, set bit 6 to 1 (preserve other bits that are ON).

3.Write 1 to register 8001.

4.Write command code 9021 to register 8000.

Start— To start conditional energy accumulation, write command code 6321 to register 8000.

Verify Setup—To verify proper setup, read register 1794. The register should read 1, indicating conditional energy accumulation is ON.

Stop—To stop conditional energy accumulation, write command code 6320 to register 8000.

Clear—To clear all conditional energy registers (1728-1747), write command code 6212 to register 8000.

Set Control—To configure conditional energy for digital input control:

1.Write command code 9020 to register 8000.

2.In register 3227, set bit 6 to 0 (preserve other bits that are ON).

3.Configure the digital input that will drive conditional energy accumulation. For the appropriate digital input, write 3 to the Base +9 register. See the digital input templates in Table A–4 on page 166 in Appendix A— Abbreviated Register Listing.

4.Write 1 to register 8001.

5.Write command code 9021 to register 8000.

Clear—To clear all conditional energy registers (1728–1747), write command code 6212 to register 8000.

Verify Setup—To verify proper setup, read register 1794. The register should read 0 when the digital input is off, indicating that conditional energy accumulation is off. The register should read 1 when conditional energy accumulation is on.

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