Teledyne THCD-100 Relay Control Commands, Filter Size ‘fls’, Relay Trip Point ‘rlt’

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situation and it therefore makes no sense to attempt to change the band setting. For more information on this see the Principles section (5.6).

To retrieve the current filter band, use the query ‘flb?’. The returned data is:

FILTERING BAND: <band>%

b.Filter Size – ‘fls’

Use this command to set the size of the adaptive filtering buffer. The one parameter this command takes is the buffer size in seconds, between 0 and 6 seconds (integer values only). (0 can be used to effectively turn the adaptive filtering off).

To retrieve the current filter size, use the query ‘fls?’. The returned data is:

FILTERING SIZE: <x> sec

… where

<x> = number of seconds of filtering

[Note if current size is 0 then returned data is: FILTERING SIZE: 0 (NO FILTER) ]

5.7.Relay Control Commands

a)Relay Trip Point – ‘rlt’

This command sets the point at which the relay switches from one state to the other. When the source data is below this point then the relay is CLOSED, so therefore when the source data rises above this point then the relay is OPEN. The command takes two parameters – the first is the relay whose trip point is to be set (1 or 2) and the second is the trip point in engineering units, as configured with the Input Channel range command (see 5.2(a)). Note that the first parameter is always required even if the second relay has not been factory fitted.

The current trip point values can be retrieved using the query ‘rlt?’. The returned data is one line for each relay, as follows:

RELAY <x>,TRIP POINT: (comma req’d, no space)

… where ...

<x> = the relay number and TRIP POINT is in terms of the set full-scale display value.

b)Relay Hysteresis – ‘rlh’

This command configures the hysteresis setting of the relay. It takes two parameters – the first if the relay in question, the second is the percentage hysteresis, represented as a percentage of full scale of the source channel, with limits of 0.0% (i.e. no hysteresis) to 10.0%.

The current hysteresis setting can be retrieved using the query ‘rlh?’. The returned data is one line for each relay, as follows:

RELAY <x>,HYSTERESIS: (comma req’d, no space)

… where ...

<x> = the relay number and HYSTERESIS is in percent.

165-072011 THCD-100 Power Supply

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Contents Teledyne Hastings Manual Print History Table of Contents Specifications FeaturesGeneral Information Transducer socket Pinout 15 Pin D Type InstallationPin Number Designation Serial Socket Pinout 9 Pin D Type Interface Socket Pin out Miniature 15 Pin D TypeInterface Pin Number Designation 1Power Connection Socket Panel MountingAnalog Inputs FeaturesIntroduction Analog OutputsAdaptive Filtering Setpoint ModeUser Re-zero Setpoint SourceFilter Size Menu Screens Common Switch FunctionsEdit Mode Editable ScreensMain Screen not changing setpoint Switch FunctionsFront Panel Screens Main Screen changing setpointMain Menu Screen Switch FunctionsSetpoint Screen Input Screen Filtering ScreenComms Menu Screen Serial ScreenFactory Defaults Confirmation Screen Relay ScreenCommand/Query Format Serial CommunicationOutput Current Readings ‘r’ Main CommandsOutput Current Readings Repeatedly ‘rp’ Setpoint Source ‘sps’ Setpoint Mode ‘spm’Setpoint Value ‘spv’ Setpoint Initial Value ‘siv’Serial Baud Rate ‘bra’ Serial CommandsSetpoint Initial Mode ‘sim’ Serial Communication Protocol ‘pro’Channel Setup Commands Filtering CommandsRelay Trip Point ‘rlt’ Relay Control CommandsFilter Size ‘fls’ Relay Hysteresis ‘rlh’User Input Re-zero ‘irz’ Other CommandsRetrieve All Settings ‘ras’ Date of Last Factory Calibration ‘dlc?’Cleaning Service & CalibrationService End of LifeAppendices Appendix aSetting Default Value Additional Information Appendix BAppendix C Settings in ‘ras’ command stringDescription Type and size Warranty Repair Policy WarrantyNon-Warranty Repair Policy
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