Building Automation Knowledge Base

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$

Issue Can I use analog modems on digital phone lines? Environment I/NET site Cause Can I use analog modems on digital phone lines? Resolution Using analog modems with digital phone lines will damage the modems.

Issue Determine whether a phone line is digital or analog for a modem on an I/NET site Environment I/NET site Cause Determine whether a phone line is digital or analog for a modem on an I/NET site Resolution The customer may have the answer, but a better option would be to contact the Phone Company Tech Support section to be sure. A standard DVOM may not give reliable information.

Issue Running AVIs in I/NET 2000 Environment I/NET Site Cause Running AVIs in I/NET 2000 Resolution Though It has been done, this feature is not officially supported.

Issue Need to locate the microprocessor on a 7740 or 7741 Environment PCU 7740 PCU 7741 Cause Need to identify the chip for replacement Resolution The correct chip is labeled U7.

Issue Can a 7740 read 4 to 20 milliamp input? Environment I/NET site Cause Some sensors will only output a 4-20ma signal and the controller must be able to read it in order to display the sensor values. Resolution Although the controller is calibrated to read 1 to 5 volts, a voltage sensing resistor can be added to read 4 to 20 milliamps. Refer to TCON 092 for details.

Issue Information on a MAMAC sensor Environment I/NET site Cause information on a MAMAC sensor Resolution Their phone number is (United States) 1-800-843-5116. Their fax is 612-829-5331

Issue What is the equation to convert Celsius to Fahrenheit? Environment I/NET Calculation Editor Cause Unit Conversion Resolution Use the Equation: F = 1.8 x C + 32 In I/NET this would appear as C0*P0+C1. C0=1.8; C1 = 32; P0 = °C AI

Issue Formula for BTU/Hr heat exchange in a coil Environment I/NET site Cause Formula for BTU/Hr heat exchange in a coil Resolution Q = 500 x GPM x ΔT; where: 500 is a math constant GPM = Gallons Per Minute ΔT = Sensible heat change

Issue Conversion Equation for Fahrenheit to Celsius Environment I/NET Site Cause What is the Conversion Equation for Fahrenheit to Celsius Resolution C = 5 / 9 x (F-32)