Building Automation Knowledge Base

Issue Is there a difference between the IDisc wand for I/NET 4.xx and I/NET 1.xx or 2.xx systems? Environment I/NET Site Cause Is there a difference between the IDisc wand for I/NET 4.xx and I/NET 1.xx or 2.xx systems? Resolution Yes, there is a difference. In the I/NET 4.xx system, the Dongle (the Gray plug) is a 25-pin connector. This connector also contains a circuit board that is only compatible with I/NET 4.xx. In the I/NET 1.xx and 2.xx systems, the Dongle is a 9-pin connector. This also contains a circuit board that is only compatible with I/NET 1.xx and 2.xx systems.

Issue How to tell what Revision the BIN files are in the Data directory of I/NET Environment I/NET Site Cause How to tell what Revision the BIN files are in the Data directory of I/NET Resolution In the data directory, the time stamp value is equal to the Rev number. For example, the 7798.Bin -- 58KB – 5/18/01 – 2:23 AM, The Rev number of this file is 2.23.

Issue Can you mix Prox cards and reader with the same format? Environment I/NET Access Control Site Cause Can you mix Prox cards and reader with the same format? Resolution No, If you have a 26 bit HID reader, you have to have a 26 bit HID card. A 26 bit Motorola card will not work with a HID reader. The same is true of other way Motorola reader and HID cards will not work.

Issue Can I share a 24 VAC Transformer with a 7798 and a 7910 or 7920 DPU? Environment 7798 7910 DPU 7920 DPU Cause The 7798 is a half wave DC board and the DPUs are full wave boards. The grounding is different and this will cause power problems that will destroy the 7798. Resolution You will burn up the 7798 board if you put it on the same transformer as a 7910 or 7920 DPU.

Issue OSTART and OSTOP not working on a temperature control extension Environment I/NET Resident I/O Temperature Control Extension Cause Optimal start requires the space temperature to meet the cooling/heating target temperature sometime after the optimized start time. Resolution Check that the space temperature has met the cooling/heating target temperature sometime after the optimized start time in order for the OSTART to work properly.

Issue How does a site set up a fan start with setup and setback temperatures? Environment I/NET Site Cause How does a site set up a fan start with setup and setback temperatures? Resolution The site can set up a temperature control extension. Then only populate the setup and setback temperatures. These are the only temperatures you put differentials on. The rest of the temperatures leave at the default values.

Issue I can not see the access controls editor in the I/NET system. What did I do wrong? Environment I/NET Site Cause The "Enable Access Control" check box must be checked. This box is located in the I/O Server driver. Resolution Edit the I/O Server configuration Check the access box Log out of I/NET Log back and the access is now available.

Issue Deleting doors in the access control editor Environment I/NET Site with Access Control Cause Deleting doors in the access control editor Resolution When deleting a door from a 7791 DPI, 7793 MCI or a 7798 I/Site LAN, make sure to delete the door Parameters before deleting the door (DO) point. Deleting the door (DO) point without previously deleting the door Parameters may cause unpredictable system performance. If the point has already been deleted first, the best way is to: Re-add the point again Save it in the NetCon Follow the correct sequence. Then it will work fine.

Issue Second door reader (09 Door) does not work on 7920 controller Environment 7920 DPU Cause If you have defined one door in a DPU-7920, and the door's exit reader parameter is set to anything besides NO, then the second reader port automatically becomes the exit reader. Resolution If you have defined two doors in a DPU 7920, neither door can have an exit reader defined. Set the door's exit reader parameter to NO.

Issue Does anti-passback (APB) affect both the entry reader and the exit reader? Environment I/NET Cause I/NET denies access due to anti-passback on entry readers only for safety reasons. Resolution I/NET denies access due to anti-passback on entry readers only. A key/card is never denied access on an exit reader. This is for safety purposes; you should always be able to exit a building.

Issue How to number a zone for an exterior door for an anti-passback (APB) system Environment I/NET Cause Application assistance Resolution If the entry reader at an exterior door is physically located in an area, that has no zone number. Then the zone number assigned to the entry reader of an exterior door should match the zone number assigned to the exit reader of that door.

Issue Activating the release to exit button failed to open the door Environment Access/Door Editor Cause Two definitions in the Access/Door Editor make the release button fail to open the door: door release and door strike. Resolution Define the door release switch in the Access\Door Editor. This switch can either be Normally Open NO, or Normally Closed NC Define the door strike in the access\door editor as BOTH

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 In LonMaker, how do I get rid of multiple message tags within a base unit virtual function block? Environment Vista Site Cause In LonMaker, how do I get rid of multiple message tags within a base unit virtual function block? Resolution Right click on the VFB and select to delete NVs & MTs. All unconnected message tags will then be deleted.