Building Automation Knowledge Base

Issue When the AS is connected to the ES we never have problems to login but sometimes when the AS have been disconnected from the ES it is not possible to login to the AS. Environment StruxureWare Building operations 1.4 Cause If a user do one invalid logon attempt this account will be locked until the AS is connected to the ES again. Resolution If the AS is not connected to the ES don't do invalid logon attempts. Make sure to type in the correct password. 

Issue On a SE7600 controller, is the nciSccModel snvt read-only or will it modify the controller's profile?  Customer has replaced the HVAC equipment such that the existing profile does not match up with the existing SE7600. Environment SE7600 VT7600 Cause Mechanical equipment was replaced with a different design Resolution The nciSccModel snvt does not modify the SE7600 profile.  It is a read-only. A different model of controller is the best option for the new mechanical design. An external solution may also work (i.e. the use of a relay).

Issue If you import Users via a CSV with multiple Access Levels, some of the Users can have the wrong Access Level attached to their profile. Product Line Security Expert Environment Security Expert WEB Controller v4.00 314 I100 and later Cause The issue seems to occur only if the Access Level with the longer name is read in first, and then the shorter name. Example: "Access Level" will come before "Access Level Main" Resolution Within the CSV, sort the CSV by the Access Level column to ensure that the shorter name comes first.

Issue Receiving warnings such as Import[SNMPv2-CONF] not found for mib [ACC-NC-ALARM-MIB] when loading EBO/Continuum MIB files into SNMP NSM tool Product Line EcoStruxure Building Operation, Andover Continuum Environment Building Operation Enterprise Server Continuum NetController II Cause Required base MIB files referenced in the IMPORT section of the EBO/Continuum MIB files not present Resolution The EBO/Continuum MIB files contain references on their IMPORT section to base MIB files that are commonly included with the SNMP tool used to compile the MIBs. (See screenshot below) Those files are typically included/installed by the SNMP NMS tool, in cases where the tool does not include the base files they must be located and either loaded manually before loading the EBO/Continuum MIB or placed at the appropriate folder for the tool being used. For example, when using MG-SOFT SNMP MIB browser, the tool places the base MIB files @ C:\Program Data\MG-SOFT\SMI Modules\MIB Modules\SMI

Issue According to the documentation the max cable lengths for the sensors connected to a Multical device are : Temperature sensors : 10m Flow Sensor : 2,5m Is it possible under any circumstances to extend the cable length up to 15m?   Environment Multical Cause The sensors come in pairs and are calibrated. They must never be extended. The longest length available is 10 metres. Resolution It is not possible to extend the cables to the sensors, as the devices are calibrated with the sensors delivered from the factory.

Issue Do any of the SmartStruxure Lite room controllers come with a morning warm-up cycle? Environment SmartStruxure Lite SE8x000 SE7x00 Cause Spec requirement Resolution None of the room controllers come with morning warm-up.  It would have to be provided at the network level (i.e. Automation Server).

Issue My NPR is flashing the LEDs from left to right, and I cannot get into the configuration editor. Environment NPR Cause It means the NPR is ready for a software restore. Resolution Once you load a bin file, you will be able to configure it.

Issue What are the differences between DPU EPROM rev 2.21 and 2.22? Environment DPU EPROM Cause On the 2.22 rev, one problem was corrected and an enhancement included. Resolution The problem was when using first key auto-unlock, the software would show the door as unlocked, when the first valid read had not yet unlocked it. It now remains in the secure mode in software until the first valid read. The enhancement is that when a DPU is operating on back up battery power, the power led will now flicker to indicate the change from commercial power.

Issue Is there a specific type of printer used with a 7810 printer tap? Environment 7810 printer tap Cause 7810 printer tap is only compatible with serial dot-matrix or impact printers. Resolution It must be a serial dot-matrix or impact printer. If your printer is parallel, some manufacturers make and sell a serial conversion card.

Issue Is there a limit to the alarms, messages and transactions a printer tap will receive and print? Environment AMT Cause You cannot get them from another link that is Ethernet connected. Resolution It is limited to alarms, messages and transactions that originate on the same controller lan as the printer tap.

Issue CALC is not an option in the DDC editor of a 7700 or 7716. Environment DDC Editor 7700 7716 Cause The Calculation module exists only in MR controllers and ASCs. Resolution Use the DCU or PCU Calculation editor. Refer to TCON 209 or TCON 237 for more details about Calculations and DDC modules.

Issue What is a Parent Point in a UC (Unitary Controller)? Environment Unitary Controller Cause Feature information Resolution A parent point is nothing more than the AO or DO point to which you add a UC extension: VAV, AHU, PID, FLT, or HPMP. The functioning of the extension is directly tied to the state of the parent point and the command pairing. Refer to TCON 209 or TCON237 for important details.

Issue Share the value of a DM point with several controllers using indirect points Environment I/NET Resident I/O Cause Sharing global points designated as DMs. Resolution Use an internal DI point with a "P0" calculation tied to the DM point. Set this DI as Global. The indirect points (which exist in the other controllers) should be built as DIs with the same Station Parameters used for the DM point.

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 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.

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 SevenTrends custom report - portions of the printed report are blank Environment   SevenTrends Report Cause The links between your database tables may not be correct or you may be sorting the wrong tables. Resolution The links between your database tables may not be correct. Check your links. You may be sorting the wrong tables. Make sure you are sorting the tables that have the correct information.

Issue The 901 modem is dialing multiple times (6-8) before successfully registering a change on the alarm window. Environment 901 Modem Cause Normally it only takes one dial-up attempt to establish the communication link. If it takes 6-8 times, it indicates modem or telephone line problems. Resolution In the dial-up parameters, define the number of dial up attempts before line block. 10 is the default value.

Warning Potential for Data Loss: The steps detailed in the resolution of this article may result in a loss of critical data if not performed properly. Before beginning these steps, make sure all important data is backed up in the event of data loss. If you are unsure or unfamiliar with any complex steps detailed in this article, please contact Product Support Services for assistance. Issue How do I change the power line frequency setting on the 7716 / 7718 / 7756? Environment I/NET  Hand Held Console (HHC) Cause How do I change the power line frequency setting on the 7716, 7718, 7756? Resolution Physically remove the I/O points from the controller. See TCON 096 for details. Using the HHC, press [Code] , 92, [Enter] to select the AC line frequency Press [Inc] or [Dec] to switch between 50 an 60 hertz Press [Enter] to accept your choice After downloading the software and database, place the external points on the 7716 (or 7718 and 7756) Place the controller on the LAN Note:  Code 92 is not required for any of the 779x Interface's. Entering this code on the Hand Held Console will produce the error LED to illuminate. 

Issue Is SIGNAL supported on Windows 2000? Environment SIGNAL version 4.4.1 and 5.0.0 Cause Windows 2000 was not included in testing Resolution SIGNAL 4.4.1 is compatible with Windows 95/98. SIGNAL 5.0.0 is compatible with Windows XP.