Building Automation Knowledge Base

Issue Can I use both door readers on a DPU for two elevators? Environment I/NET Site Cause Can I use both door readers on a DPU for two elevators? Resolution No, An elevator DPU supports only one door and one reader. Anytime a door is defined as an elevator; the second door is no longer available for use.

Issue Which time schedule has the highest override control? Environment I/NET site Cause Which time schedule has the highest override control? Resolution The temporary time schedule overrides special days and the regular time schedule, thus it has the highest control.

Issue Can I use a Master-Slave time schedule in an access control system? Environment I/NET Site Cause Can I use a Master-Slave time schedule in an access control system? Resolution The access control system does not support a Master-Slave scheduling relationship between points, as does the standard I/NET time scheduling editor.

Issue Ways to force an immediate dial on an I/NET DPU Dial type system: Environment I/NET DPU AD/AA Dial system Cause Need for force a modem to dial a site Resolution Performing the following access control changes will cause the system to immediately dial affective remote sites, regardless of the DPU Dial type settings. A) Changing an individual or group record type to “Temporary” B) Modifying an individual or group “Temporary Schedule”

Issue Can I add a DPU on an existing 7792 Sublan? Environment 7910 DPU 7920 DPU 7792 SubLAN Cause The 7792 are for MRs and ASCs only. Resolution A DPU cannot be added on an existing 7792 Sublan.  To correct this: Do a Memory Clear on the controller with a HHC. With the HHC, change the controller to a 7793. This will allow you to have MRs, ASCs And DPUs on the same SubLAN.

Issue Where can I find information on lighting controller programming? Environment I/NET Site Cause Where can I find information on lighting controller programming? Resolution It is outlined in the System Operator Guide, TCON 207 for I2K rev 1.XX, TCON 236 for rev 2.XX, chapter 15 for both. There is some additional information, such as the addresses for zone points, are limited to 1200-1507. Another specific is, the control descriptors for the zone, must have the first of the pair equal a value of one. The control descriptor for the circuit points, need the first of the pair to equal a value of zero. There is an example save file in all host soft wares, sav subdirectory, named DEF7780.sav. A person should copy this file, rename it to their controller address and load it, to view examples of points.

Issue Using I/NET2000, Can a site change a filemaster setting? Environment I/NET2000 Cause Using I/NET2000, can a site change a filemaster setting? Resolution Not, without difficulty. Setting a pc as a filemaster makes irreversible changes in software. We, in tech support have not found a way to reverse them, short of uninstalling Inet, deleting the root directory, and removing registry entries. Then reload Inet software. See pages 1-12 through 1-14 of TCON 237, Technical Reference Guide for a discussion of filemaster functioning.

Issue Should we recommend Message tag bindings be performed after the commissioning of the device? Environment I/NET Site Cause Should we recommend Message tag bindings be performed after the commissioning of the device? Resolution No, this should not be necessary. It may be preferable, however, for a dialed network as the 901 device must be added to the network when connected to the network.

Issue Where do I find I/NET's phone entries? Environment I/NET 2000 Cause This file is only created if a dial setup is actually being used. Resolution The phone entries are stored in the file inet.phn in the directory c:\inet2000\data. 

Issue What is the function of an IP address? Environment I/NET Site Cause What is the function of an IP address? Resolution The IP address uniquely identifies a device on a TCP/IP network. No two computers can have the same IP address.

Issue What is the function of a subnet masking Environment I/NET Site Cause What is the function of a subnet masking Resolution The IP address is made up of two parts - the network and host addresses. The subnet mask identifies which parts of the IP address represent the network and which part represent the host.

Issue Can I have more than one version of I/Net 2000 on the same hard drive? Environment I/NET 2000 Cause Can I have more than one version of I/Net 2000 on the same hard drive? Resolution Yes, although we do not recommend that you do this, it is possible. You will need to first partition your hard drive. After you have created two partitions, you will need to install a version of windows on each partition. One of the partitions will have to be WinNT with NT being installed first. This way you can have I/Net 1.20 on C:\ and I/Net 2.10 on D:\. The two versions of I/Net 200 cannot share a Windows registry.

Issue What is the minimum recommended requirements for a host workstation with I/Net 2000 on it? Environment I/NET 2000 Site Cause What is the minimum recommended requirements for a host workstation with I/Net 2000 on it? Resolution Pentium Class Processor 200 MHz or greater 32 MB of RAM 200 MB of Hard drive space CD-ROM drive Video Display of 800 x 600 Windows 95, 98 or NT. Windows 2000 or ME will not work with I/Net 2000 Mouse. If you plan on using an Ethernet LAN, the following will be needed. TCP/IP capabilities Static IP Address IP Mask Gateway IP address

Issue How do I get the Filemaster name? Environment I/NET network Cause Tech support recommends you use the static IP address of the computer you will be using as a Filemaster. Resolution To find the IP address of a computer: Right click on Network Neighborhood and scroll down to Properties. Under the Configuration tab you will see TCP/IP, double click it. IP address will be the active tab. Within it, you will see "Specify an IP address." The top address will be your IP address. Write down this number and type it in to the Filemaster name.

Issue I/NET host will not save the controller’s database and navigation. I/NET seems slow. An hourglass appears for a few moments, but no new (or updated) “SAV” file is generated. Environment I/NET Site Cause The NETCON file is probably corrupted. Resolution Shut down I/NET. NETCON is in the “DATA” folder in I/NET. It is recommended to remove the file; but don’t delete it until you know you won’t need the old information. Restart I/NET, then save each layer of the new NETCON architecture. Don’t forget to complete this process for the sub-LAN controllers and any access-control doors too.

Issue What is the part number for the velocity sensor (0-1.3") transducer that is connected to the VAV-UC? Environment I/NET Site Cause What is the part number for the velocity sensor (0-1.3") transducer that is connected to the VAV-UC? Resolution CFM velocity pressure transducer input 0-1.3" W.C part number is 603500-0002. Refer to TCON 069 for more details

Issue Error "Service did not Start" when opening Seven Reports Environment I/NET site with Seven Reports Cause Error "Service did not Start" when opening Seven Reports Resolution Try unchecking the auto logon in the host configuration editor. Then re-launch a report, you should be prompted for a password. Re-enter the password (if you have forgotten the password call Product Support for assistance). Once the report launches close and re-check the auto logon box in the host configuration editor. If this does not work check the following: Check the character length of your computer name. If it exceeds fifteen (15) characters this may be causing your problem. How to: Right mouse click on My Computer Select properties, System Properties window will appear. Select the Network Identification tab "Full computer name:" will be listed. Count "all" the characters. If you exceed the 15-character limit you will have to rename your computer. Caution: If your computer is a member of a Domain and you do not have Administrative rights to add and remove PC's from the domain, DO NOT CHANGE THE NAME, contact your IT Administrator for assistance. How to: From the Network Identification Tab select Properties. The Identification Changes window will appear. Under computer name you will be able to change the length or the name of the PC. This will require you to re-start the PC.

Issue Is it possible to use DC voltage to power the 7793, 7798, and the DPUs (7910, 7920)? Environment 7793 7798 7910 DPU 7920 DPU DC power Cause Although this is not the preferred method of powering these devices they are capable of this configuration. We strongly recommend the use of DC voltage be reserved for emergency backup power. Resolution The 7798B Controller, 7910, and 7920 DPUs can be powered by +24 VDC. The DC voltage should be at least +24 VDC - +27 VDC is best. Refer to the following TCONs for specific wiring detail and installation instructions: 7798B TCON 138 7910 TCON 116 7920 TCON 117

Issue Can ISDN be used to communicate to I/NET? Environment I/NET Site Cause Can ISDN be used to communicate to I/NET? Resolution I/NET is not designed to be compatible with the typical adapter of ISDN. ISDN, which stands for Integrated Services Digital Network, is a digital phone service that was popular a few years ago as an alternative to dial-up connections. ISDN allows data to be sent about twice as fast as a conventional phone line - up to 128Kbps (kilobits per second) rather than 56Kbps. As an added plus, a single ISDN line can be split into two separate channels, so you can carry on a voice conversation while your computer is connected to the Internet. It sounds great, but the catch is that it’s expensive. An ISDN connection doesn’t require a modem. Instead, you use a special ISDN Adapter, which may cost hundreds of dollars. In addition, you have to pay the Phone Company to install the ISDN line, and you pay a monthly fee for the line. On top of that, you may be billed by the minute for usage. With the spread of low-cost cable modem access in many areas and the cost of DSL access coming down, ISDN is fast becoming a thing of the past It was a good idea for its time, but its time has passed.

Issue Is there a legend for the icons displayed in I/NET Seven? Environment I/NET Site Cause Where is the legend for the icons displayed in I/NET Seven? Resolution Look in the “Getting Started” I/NET Seven TCON298.