Building Automation Knowledge Base

Issue Explain the term "Distribution Group" Environment I/NET site Cause Explain the term "Distribution Group" Resolution I/NET has four distribution groups, each with eight mask positions, extending the number of possible masks in a system to 32. Messages must match both a distribution group and active mask position before being accepted by a host.

Issue What does DLCU stand for? Environment I/NET site Cause What does DLCU stand for? Resolution Distributed Lighting Control Unit. This is a specialized type of controller or DCU. The 7780 is a DLCU. The DLCU is specifically designed for lighting.

Issue What are Conversion Coefficients? Environment I/NET site Cause What are Conversion Coefficients? Resolution These are mathematical constants a controller uses to convert analog input / outputs from the digital value used by the microprocessor to analog display values. Conversion coefficients are also used to convert digital commands from the microprocessor into analog outputs which are then used by field interface devices.

Issue What is DBF? Environment I/NET site Cause What is DBF? Resolution It is a Docutrend database function that allows you to extract the tenant number, key/card number, or data from one of the access control personnel database files.

Issue What is a DPI? Environment I/NET site Cause What is a DPI? Resolution It is a Door Processor Interface. It is also called a 7791. The DPI provides a communication gateway between the controller LAN and the DPUs.

Issue What is a MRI? Environment I/NET Site Cause What is a MRI? Resolution It is a abbreviation for Micro Regulator Interface. This is a 7792. The MRI provides a communications gateway between the controller LAN and the MRs on the SubLAN.

Issue What is Override Billing? Environment I/NET site Cause What is Override Billing? Resolution This is a point extension editor that lets you compute the amount of time a customer overrode the after-hours operating parameters for heating, cooling, and lighting.

Issue In relation to Docutrend, what is "Propagation"? Environment I/NET Site Cause In relation to Docutrend, what is "Propagation"? Resolution This is a Docutrend extraction option that instructs the system to "fill in" missing data by repeating the last valid entry until it once again encounters valid data. This option is primarily used with time-based plots.

Issue What is a Tenant? Environment I/NET site Cause  What is a Tenant? Resolution In the I/NET access control system, these are groups of individuals that inhabit the same facility but that are controlled separately.

Issue What is String Compare (SCP)? Environment I/NET site Cause What is String Compare (SCP)? Resolution This is a Docutrend function that allows you to compare two ASII strings from the access control personnel database file (ACPXXX).

Issue What is Masking? Environment I/NET site Cause What is Masking? Resolution Masking is a filtering process for sending data based on the distribution group and active mask position(s) of both the originating and destination equipment. This applies to messages, alarms, and other data. Read TCON210 and TCON300 for further explanation.

Issue What is a Leased Line? Environment I/NET site Cause What is a leased line? Resolution This is a permanent communication line providing full-time access between two devices.

Issue What is a Event Definition? Environment I/NET site Cause What is a Event Definition? Resolution This is a editor that lets you specify certain definable conditions which trigger event sequences, action messages, Docutrend reports, or DOC-to DIF conversations.

Issue How should I archive Docutrend data? Environment I/NET Site Cause How should I archive Docutrend data? Resolution It is recommended that you use floppy diskettes or a tape drive for archiving. If you use the workstation's hard drive, loss of the drive will result in the loss of both online and archived data.

Issue What is the part number for the cable that goes from and NPR to a modem? Environment NetPlus Router Cause Part Number Question Resolution CBL074

Issue Examples of Controllers and Taps that are not supported by the MIP Environment MIP Cause Offering a list of Controllers and Taps that are not supported by the MIP Resolution 7750 Building Manager 78013 78020 Tap (Plastic Enclosure) 78022 78023 78032 78033 7791 7792 7793 7716 7718 7728 7798

Issue In a "Hayes" modem what command displays the settings in the modem? Environment "Hayes" modem Cause Configuration Resolution AT

Issue In a "US Robotics" modem what command displays the settings the modem is currently using? Environment I/NET site with modems Cause Modem Commands Resolution ATI4

Issue In a “US Robotics Compatible” modem what command displays the settings in the modem’s NOVRAM? Environment  “US Robotics Compatible” modem Cause Configuration Resolution ATI5

Issue What are the “Help Commands” for US Robotics modems? Environment US Robotics modems Cause Configuration Question Resolution AT&$ ATS$ AT$