DLLR Object Commanding - Metasys - LIT-12011942 - Software Application - ODS Server - 10.1

Metasys Open Data Server Help

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ODS Server
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User Guide
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After a DLLR object is defined, an authorized user can issue one of several commands to the object.

Table 1. Commands Available to DLLR Objects




Set Mode

Monitor Only


Selects between Monitor Only mode and Shed mode for the Demand Limiting and Load Rolling strategies. The selected mode applies to both strategies; in other words, you cannot put DL in Monitor Only mode and keep LR in Shed mode.

Set Target


Demand Limiting

Load Rolling

Target Level 1


New value

Sets the active Target Level used for either the Demand Limiting or Load Rolling strategy. Optionally, you can specify a new value for the target and select a Target Description. The Target Description is an element of the DL Targets and LR Targets attributes, which describes the purpose of the target. Examples include Continuous, Off-Peak, On-Peak, and Semi-Peak.

You also can:

Reset Profile


Copies the current DLLR profile to the previous DLLR profile and starts a new, current profile. Use this command if DLLR’s Profile Tracking Period is set to Manual. It is not necessary to use this command if a definitive tracking period is selected, such as Monthly, because DLLR resets the profile automatically.

Reset Interval


Restarts the Demand Limiting calculations associated with the current interval - Fixed Window Algorithm only.

You can specify a new start of a demand interval for the Demand Limiting strategy. If you are using the Fixed Window Algorithm, and there is no EOI input defined, issue this command at the start of the utility company’s interval, the first time that DLLR runs. It synchronizes DLLR to the start minute of the utility company’s billing interval (15, 30, or 60 minutes). Thereafter, DLLR uses a pseudo EOI pulse, so that the start of each subsequent interval is synchronized. If an EOI input is defined, DLLR automatically starts each interval at the correct time.

When the Reset Interval command is received, the DLLR object resets interval parameters and starts a new Demand Interval.
Note: If the Sliding Window Algorithm is used, do not use this command, as the interval is reset each minute.



Stops DLLR operation. When disabled, DLLR releases all shed loads except those that are locked shed. Also, DLLR does not perform any calculations, report alarms, or issue any commands to any objects when disabled. DLLR attributes can be changed, but no actions are taken until DLLR is enabled.



Starts DLLR operation. If Shed mode is active, the configured DLLR strategies begin shedding loads as needed. If Monitor Only mode is configured, simulated load shedding begins.

Reset Initialization Parameters


Initializes DLLR as if it were running the demand limiting algorithm for the first time. Use it in Monitor Only mode for testing new potential demand tariff targets without using any data from a previous test. It releases all shed loads, clears all load timers, reinitializes DLLR, and clears the Energy Profile.
Note: Since these actions would adversely affect a smoothly running DLLR feature, you cannot issue this command while in Shed mode unless you manually set the Allow Reset in Shed Mode attribute to True. If you issue the Reset Initialization Parameters command while in Shed mode, the Allow Reset in Shed Mode attribute reverts to False immediately after the command is issued.
1 Possible target descriptions: Continuous, Off-Peak, On-Peak, Semi-Peak, Shoulder, Summer Off-Peak, Summer On-Peak, Winter Off-Peak, Winter On-Peak, Summer Semi-Peak, Winter Semi-Peak, Summer Shoulder, Winter Shoulder.