BACnet MS/TP CONTINUE

Transcription

1 BACNET MS/TP Topics: 1 Network Requirements 2 Device Addressing 3 Power Supply Requirements 4 System Architecture 5 BACnet Objects & Services 6 Labwork 1 EST: 45:00 BACnet MS/TP 1 Network Requirements 2 Device Addressing 3 Power Supply Requirements 4 System Architecture 5 BACnet Objects & Services 6 Labwork 7 Project Conversion 8 Troubleshooting Issues When you ve completed this presentation on EC-gfxProgram Basics, click on the QUIZ button below to take a short quiz. Then click the brown NEXT MODULE arrow below to advance to the next e-module Module X: Module Name. Click to review Instructions > CONTINUE 2

2 BACnet MS/TP Navigation Instructions At any time during a topic, you may click on the blue arrow at the bottom to return to the main menu. Select any button on the main menu to navigate to the topic of choice. When done with that topic, look for the red arrow to return to this menu. 3 BACnet MS/TP Navigation Instructions MORE INFORMATION LINKS: Select these links whenever prompted to view examples and additional info. ADDITIONAL MENU LINKS: Select these links whenever prompted to obtain more information on a specific topic. ADDITIONAL NAVIGATION LINKS: Select these links to navigate from subtopics back up to the topic level. Hysteresis Limit / Linear BACK TO TOOLBOX You will see instructions in this box regarding what to click and what you will see. In some cases, there may be semi-transparent green highlighted areas like this that are hyperlinked. QUIZ LINKS: Select these links to test your knowledge at the end of each module. NEXT MODULE LINKS: Select this link when you ve completed the current module and wish to advance to the next module. NEXT MODULE 4

3 BACnet MS/TP Icons MOUSE ICONS: Where needed when describing different processes, the following mouse icons are used to define whether to use left-, double- or right-click mouse options. Left-click 2 Double left-click Right-click STEPS ICONS: Indicate ordered steps of a procedure NOTE ICON: Where needed when describing different concepts, a note icon will provide additional information. The drag-and-drop method is only one of several methods to bring proxy points into the station s database. Topology Wiring Device Load Baud Rate CHAPTER 2 BACNET MS/TP NETWORK REQUIREMENTS TOPIC 1

4 BACnet Integration in EC-Net-AX BACnet network design review Topology and wiring Addressing Power supply Commission an EC-BOS review BCP BACnet Network driver BACnet MS/TP Communication Port Device MS/TP MAC addressing Discovering devices Device Instance number (ID) strategy PC connection with BACnet IP to MS/TP adaptor 7 MS/TP Network Topology BACnet MS/TP Network Topology 4,000 ft / 50 devices (Recommended) Data Transmission Protocol Architecture Type Number of device per segment Network Length MS/TP (RS-485) Daisy Chain 255 max (128 masters slaves) 50 recommended 1220 meters (4000 ft) max 8

5 MS/TP Network Wiring Cable Type BACnet MS/TP Network Wiring Wiring End-Of-Line Bias Shielded twisted pair (STP) (DC approved #07CBL-BACnet) Data Bus is Polarity Sensitive Shield wire is continue on the entire length Connect shield wire to building ground on one end only 120 Ohms resistor on each end of the segment - Jumper on ECB Controllers - External resistor on EC-BOS and ECB-Stat 510 Ohms per wire Minimum of one, maximum of two sets per segment Provided by built-in EOL (internal jumper EOL) 9 MS/TP Network Load All Distech Controls devices are categorized as Masters and rated as ⅛ load Other may have different network load ratings (for example, ¼, ½, or full load) If a segment contains dissimilar device load ratings, the device with the highest load rating is the one that sets the limit for the maximum number of devices for that data bus segment For example, you plan to put the following devices on one data bus segment: The solution for the above example is to create two data bus segments connected together by a repeater and then split up the devices between the data bus segments. 10

6 MS/TP Network Baud Rate By default, the Distech BACnet controllers have their BAUD rate set to AUTO The recommended baud rate for Distech Controls devices is 38.4 kbps All devices on the data bus must be set to the same baud rate Therefore, the chosen baud rate must be supported by all devices connected to the data bus Most devices will have a settings AUTO. This is the preferred setting for a controller. However, at least one controller on the BACnet MS/TP network data bus must have its BAUD rate set. The preference is to set the building controller s BAUD rate (if present). e.g. on an EC-BOS. Baud Rate Support: from 9.6 to 76.8 kbps Recommended: 38.4 kbps Default setting on ECB controllers: AUTO 11 MS/TP Network Baud Rate When the Baud rate is set to AUTO, the controller cannot initiate any communication until it has detected the baud rate of the BACnet MS/TP network If all controllers on the BACnet MS/TP network are set to AUTO, then all controllers will not communicate Setting the BAUD rate on at least one controller is required, which will set the BAUD rate for all other controllers on the data bus Setting the BAUD rate on ECB controllers is performed with the EC-Smart-Vue General Configuration Menu (See Hardware Installation Guide) 12

7 BACNET MS/TP DEVICE ADDRESSING TOPIC 2 Device Addressing / Best Practices Device Addressing Overview Device MAC Addressing Bus Master Device Settings Device Instance (ID) Number Device Numbering System 14

8 Device Addressing Overview Each device connected to the BACnet MS/TP data bus is identified by a: MAC address Device Instance number Network number The MS/TP Device MAC Address uniquely identifies a device on an MS/TP Network segment (identified by a Network Number). Devices on another MS/TP Network segment (identified by a different Network Number) can have the same MAC Address. The MAC Address is any number between 0 and 127 for Master devices, and 128 to 254 for Slave devices. Address 255 is a wild card for broadcasts. Addressing Both the MAC Address and the Device Instance must be set for each device and are essential for proper BACnet LAN operation 15 Device Addressing Overview The BACnet Device Instance (or Device ID) uniquely identifies a device across the complete BACnet internetwork. The Device Instance may be any number between 0 and It is with the Device Instance that messages are exchanged between BACnet devices. Unlike a MAC Address, a Device Instance cannot be reused elsewhere in the BACnet internetwork (it must be unique). The BACnet Network Number is any number between 1 and A network number identifies a LAN for routing purposes. Each BACnet MS/TP Network will have a Network Number, and each BACnet IP Network will also have a Network Number. Addressing Both the MAC Address and the Device Instance must be set for each device and are essential for proper BACnet LAN operation 16

9 MS/TP Device MAC Address Reserve some MAC Addresses for common commissioning and maintenance tasks. Reserve MAC 0 for the Building Controller MS/TP port Reserve MAC 1 for a portable router, so it can be temporarily connected without conflicting with other devices already connected to the data bus. Avoid gaps in the MAC address sequence. The physical order is unimportant. MAC Addresses should be used as shown in the following table. 17 Setting MS/TP Device MAC Address ECB devices: The MAC address can be changed using EC-Smart- Vue (all DIP switches need to be at 0 position) The MAC address can also be changed using DIP switches on ECB-203 and higher series (device power cycle is required after) ECB-STAT: On the LCD interface menu EC-BOS: Using EC-Net AX Pro, MstpPort / Link Properties Ex. MAC: = 82 Tool Kit All technicians should have an EC-Smart-Vue in their tool kit 18

10 MS/TP Bus Master Device Settings In a typical BACnet Network, the Network interface card used to access the MS/TP bus is called the Bus Master. In recommended architectures, the EC-BOS MS/TP Port is the Bus Master Device. There are 4 configurations that are required on the Bus Master Device: Baud Rate MS/TP Address (MAC Address) Max Master Max Info Frames 19 MS/TP Bus Master Baud Rate & MAC The Baud Rate Usually set in the Bus Master (EC-BOS) and will be the only reference if all devices on the network are set to AUTO. All devices on the network need to have the same Baud rate manually set or AUTO 38.4 kbps is the recommended Baud rate setting in the EC-BOS AUTO is the default and recommended setting for all ECB controllers The MS/TP Address Or MAC Address for the Bus Master (EC-BOS) is set to 0 (it s the default value) 20

11 MS/TP Bus Master Max Master MS/TP Network: Bus Master Device (Building Controller) To prevent the passing of the token to unused MAC Addresses situated after the final Master device, the Max Master must be set in each Master Device. About the Max Master Property By default, the Max Master for the MS/TP Bus is set to 127 in the EC-BOS In practice, the actual number of devices connected to a data bus is far less. This gap unnecessarily slows-down the data bus. Set the Max Master in the EC-BOS to the highest Master device s MAC Address to optimize the efficiency of the data bus (reserve 3 to 5 more for spares) 21 MS/TP Bus Master Max Info Frames MS/TP Network: Bus Master Device (Building Controller) Max Info Frames is set to 20 (default) in the EC-BOS may be increased as needed Once a device has the token, it can make a number of information requests to other devices on the BACnet internetwork. The maximum number of requests is limited by the Max Info Frames property. Ordinary BACnet MS/TP devices should have the Max Info Frames properties set to between 1 and 5. The Bus Master (EC-BOS) should have the Max Info Frames property set to about 20. Device Type Info Frames Reason ECB-STAT 1 Thermostats ECB-VAV series 5 Terminal units controllers don t have many requests ECB-203 (and above) 5 System unit controllers have more requests EC-BOS 20 Building Controllers have most requests 22

12 BACnet Device Instance Number (ID) Default Numbering System for Distech Controls controllers By default, controllers from Distech Controls automatically self-assign a Device Instance number generated from the MAC Address assigned to the controller during installation. The Device Instance number is calculated as follows, where 364 is Distech Controls BACnet manufacturer ID: Default Device Instance number = 364 X MAC Address This Numbering system is sufficient for a BACnet network that has only one MS/TP Network on only one Building Controller (EC-BOS). Examples: MAC Address Default Numbering System Default Device Instance Number BACnet Device Instance Number For Larger BACnet Networks For larger BACnet networks that have more than one building controller, set the MAC addresses, Device Instance numbers and Network numbers manually according to a good well thought-out network planning scheme. 24

13 Device Instance Numbering System Numbering System for MAC Addresses, Device Instance and Network Numbers Distech recommends the following scheme, as it reuses the MAC Address and Network Number in the Device Instance number to make it easier to implement: Discover Make sure to add only the devices connected to the MS/TP port of the specific EC- BOS being configured. Using this numbering system will greatly help to identify those devices that should be added to a given EC-BOS. 25 Device Instance Numbering System Example 26

14 BACNET MS/TP POWER SUPPLY REQUIREMENTS TOPIC 3 Power Supply Requirements Power Supply Wiring Power Supply Ground Lift Typical Wiring Diagram 28

15 Power Supply Wiring 24V Power Supply wiring The 24V COM terminal of all devices must be connected to the Electrical System Ground. Without this signal reference, transceivers may interpret the voltage levels of the differential data signals incorrectly, and this may result in data transmission errors. All Distech devices use the 24V COM terminal as the signal reference point for the data bus. That wire must be connected to the Electrical System Ground at the power supply. This ensures that the 24V COM terminals of all devices in the building are at the same potential Mechanical ground is unacceptable: Do not use a pipe, conduit or duct work for a ground For inter-building connections, it is recommended to use a BACnet/IP or Fox network connection. 29 Power Supply Ground Lift Avoid Ground Lift Ground lift is caused by wire resistance causing voltage drop on the power wire run. Because the 24V COM terminal is the signal reference point for the data bus, a ground lift would offsets that reference and affect the transceiver s valid data levels. If the ground lift (voltage drop) is more than 7 volts, there is a risk of data corruption and offline events due to the device being incapable of correctly reading data signals. 30

16 Power Supply Ground Lift Techniques to Reduce Ground Lift Power wiring runs should not be too long, nor have too many devices connected to it. Use the instructions in the Hardware installation guide for limitations info. Always use a transformer with 100VA power or less. Power 5 devices or less with one 100VA transformer. Use a wire with a gage of 18 or less for the power run. When the total load of a number of device requires more than 100 VA, use two or more transformers. Maintain consistent polarity when connecting controllers and peripherals to the power run. The 24V COM terminal of the transformer must be connected to the building s ground. 31 BACNET MS/TP SYSTEM ARCHITECTURE TOPIC 4

17 Typical Wiring Diagram Device BACnet MS/TP LAN and Power Wiring Diagram 33 Medium-to-Large Building Architecture 34

18 Peer-to-Peer Architecture True Peer-to-Peer Typical architecture for very small projects No building controller required Any device is able to Initiate data transfer Data sharing from one to many Local network connection required for engineering 35 BACnet IP to MS/TP Network Adaptor Used to connect a computer (typically a laptop) to a BACnet MS/TP network Internal Web server for configurations and diagnostics Optically isolated MS/TP port Supplied by a USB port (USB port is strictly used to power the unit) 3.5mm Stereo jack quick connect to MS/TP bus Applications Commissioning Configuring Engineering Troubleshooting Adaptor Use the adaptor in Peer-to-Peer architectures Also when no IP connection to the BAS is accessible 36

19 BACNET MS/TP BACNET OBJECTS & SERVICES TOPIC 5 BACnet Specific Objects BACnet Objects Inputs Outputs Values PID Schedule Calendar Commandable objects usage Non-commandable objects usage BACnet Network properties Alarm properties (B-AAC) 38

20 BACnet Specific Services Read Property Services COV Subscription Services Receive Broadcast COV Write Property Services Send Broadcast COV Services 39 LAB 12: Getting Started With BACnet MS/TP BACnet MS/TP LABWORK TOPIC 6

21 Lab 12: Starting With BACnet MS/TP LAB min Getting Started With BACnet MS/TP Controllers 40:00 Ideal for large control requirements, ranging from 28-points to 76-points (HW inputs/outputs) (support up two ECx-400 extension modules) Fast-response 32-bit microprocessor for complex data processing, including floating point support and math function execution, such as trigonometric and psychometric calculations Supports up to 500 network values 41 Lab 12: Starting With BACnet MS/TP A. Add BACnet Network B. Configure the Local Device (EC-BOS) C. Add & Configure MS/TP Port D. Set MAC Addresses for BACnet Devices E. Discover & Add Devices F. Configure Device IDs for all Devices G. Configure Max Master H. Launch EC-gfxProgram / Load a Project 42

22 Lab 12: Starting With BACnet MS/TP LAB 12A 3 min Create a BcpBacnetNetwork on the EC-BOS station LAB 12B 2 min Configure the Local Device (EC-BOS) LAB 12C 10 min Add & Configure the MSTP Port LAB 12D 10 min Set MAC Address for all BACnet devices 43 Lab 12: Starting With BACnet MS/TP LAB 12E 3 min Discover & Add BACnet devices LAB 12F 5 min Configure Device IDs for all BACnet devices LAB 12G 2 min Configure the Max Master property and communicate to all devices on the BACnet network LAB 12H 5 min Launch EC-gfxProgram and Load a project 44

23 Lab 12: Starting With BACnet MS/TP LAB 12A 3 min Add a BcpBacnetNetwork on the EC-BOS Station From the Distech Controls palette, add the BcpBacnetNetwork driver to your station. Or use the New button in the Driver Manager. 45 Lab 12: A Add a BACnet Network Add the BcpBacnetNetwork driver to the Drivers container of your EC-BOS station.

24 Lab 12: A Add a BACnet Network Add the BcpBacnetNetwork driver to the Drivers container of your EC-BOS station. 2 1 Driver Manager New button Lab 12: Starting With BACnet MS/TP LAB 12B 2 min Configure the Local Device (EC-BOS) On the Local Device s property sheet, set the Object ID property to a value other than the default of -1. For the Lab exercise, we will use the last 2 digits of the EC-BOS IP address plus 000 to designate the EC-BOS as the master controller. EXAMPLE: = last 2 digits of BOS IP ( ) 000 = MAC address of EC-BOS 48

25 Lab 12: B Configure Local Device Set the Object ID property to a value other than the default of -1. Use the last 2 digits of the EC-BOS IP address plus 000 to designate the EC-BOS as the master controller. EXAMPLE: = last 2 digits of BOS IP ( ) 000 = MAC address of EC-BOS Lab 12: B Configure Local Device Set the Object ID property to a value other than the default of -1. Use the last 2 digits of the EC-BOS IP address plus 000 to designate the EC-BOS as the master controller. EXAMPLE: = last 2 digits of BOS IP ( ) 000 = MAC address of EC-BOS Local Device Object ID Property sheet

26 Lab 12: Starting With BACnet MS/TP LAB 12C 10 min Add & Configure the MSTP Port From the distechcontrols palette, add an MSTP port to the BcpBacnetNetwork under BACnet Comm > Network. Configure the following properties on the MSTP Port s property sheet: Port Name Baud Rate MS/TP Address (MAC) Max Master 51 Lab 12: C Add/Configure MS/TP Port From the distechcontrols palette, add an MSTP port to the BcpBacnetNetwork under BACnet Comm > Network.

27 Lab 12: C Add/Configure MS/TP Port From the distechcontrols palette, add an MSTP port to the BcpBacnetNetwork under BACnet Comm > Network. distechcontrols MSTP Port Lab 12: C Add/Configure MS/TP Port Configure the following properties on the MSTP Port s property sheet: Network Number Port Name Baud Rate MS/TP Address (MAC) Enabled Bacnet Comm > Network > MSTP Port Property sheet Set to TRUE

28 Lab 12: C Add/Configure MS/TP Port Configure the following properties on the MSTP Port s property sheet: Network Number Port Name Baud Rate MS/TP Address (MAC) Enabled Lab 12: Starting With BACnet MS/TP LAB 12D 10 min Set MAC Address / Baud Rate for all BACnet devices Using one of the following methods, set the MAC address and BAUD rate for the BACnet controllers: DIP switches EC-Smart-Vue LCD screen (x50 series) Menu button (STAT only) 56

29 Lab 12: D Set Device MAC Addresses Using one of the following methods, set the MAC address and BAUD rate for the BACnet controllers: DIP switches EC-Smart-Vue LCD screen (x50 series) Menu button (STAT only) Lab 12: D Set Device MAC Addresses The following options are available for setting the MAC address for a programmable BACnet device: Click for more info: DIP Switches EC-Smart-Vue X50 LCD Screen STAT Menu

30 Lab 12: D Set Device MAC Addresses DIP Switches DIP Switches Binary settings BACK TO SET MAC Lab 12: D Set Device MAC Addresses EC-Smart-Vue Advanced menu Password = GEN CFG menu MAC address BAUD rate BACK TO SET MAC

31 Lab 12: D Set Device MAC Addresses x50 series Controllers LCD Screen Settings Menu MAC address BACK TO SET MAC Lab 12: D Set Device MAC Addresses STAT Menu button Menu button COM address set? BACK TO SET MAC

32 Lab 12: Starting With BACnet MS/TP LAB 12E 3 min Discover & Add BACnet devices Discover the devices (physical controllers) on your BcpBacnetNetwork. Add them to the BcpBacnetNetwork in the Database pane. Rename the device as appropriate with the site s device naming convention. 63 Lab 12: E Discover/Add BACnet Devices Discover the devices (physical controllers) on your BcpBacnetNetwork. Add them to the BcpBacnetNetwork in the Database pane. Rename the device as appropriate with the site s device naming convention.

33 Lab 12: E Discover/Add BACnet Devices Discover Pane Database Pane Lab 12: Starting With BACnet MS/TP LAB 12F 5 min Configure Device IDs for all BACnet devices Select the devices for which you wish to change the Device ID in the Database pane, and click the Change Device ID button. Set the Device IDs for devices simultaneously for common changes or individually for changes unique to a specific device. 66

34 Lab 12: F Configure Device IDs Select the devices for which you wish to change the Device ID in the Database pane, and click the Change Device ID button. Set the Device IDs for devices simultaneously for common changes or individually for changes unique to a specific device. Lab 12: F Configure Device IDs 1 Change Device ID Database Pane

35 Lab 12: Starting With BACnet MS/TP LAB 12G 2 min Configure the Max Master property and communicate to all devices on the BACnet network On the MSTP Port Link property sheet, use the MSTP Configuration tool to set the Max Master for all BACnet devices on the network. 69 Lab 12: G Configure the Max Master On the MSTP Port Link property sheet, use the MSTP Configuration tool to set the Max Master for all BACnet devices on the network.

36 Lab 12: G Configure the Max Master Max Master MS/TP Configuration tool Lab 12: Starting With BACnet MS/TP LAB 12H 5 min Launch EC-gfxProgram and Load a project Right-click on the Bacnet device and select Launch Wizard. EC-gfxProgram will load under EC-Net-AX. Validate connectivity with both the EC-BOS and the BACnet controller. Load a pre-loaded application project from the Code Library. 72

37 Lab 12: H Launch GFX and Load a Project Right-click on the Bacnet device and select Launch Wizard. EC-gfxProgram will load under EC-Net-AX. Validate connectivity with both the EC-BOS and the BACnet controller. Load a pre-loaded application project from the Code Library. Lab 12: H Launch GFX and Load a Project Launch Wizard EC-gfxProgram

38 Lab 12: H Launch GFX and Load a Project 1 Code Library 2 gfxapplications 3 BACnet MS/TP PROJECT CONVERSION TOPIC 7

39 Project Conversion To convert a project engineered in another protocol such as LonWorks, you must convert it to the current protocol in this case, BACnet. Before conversion, the Error List will display many errors, such as below, because BACnet does not know how to interpret the other protocol s objects. 77 Project Conversion To convert a pre-engineered project to another protocol, use the Convert Project button in the File menu. The resulting new list of errors should be significantly reduced

40 Project Conversion In the case of converting from a Lon project, BACnet does not recognize Network Variables or SNVTs, and so each Network Variable must be replaced with a BACnet Network Value block: Project Conversion Each Network Value block must be configured for the following properties: Network Value Mode Configuration Type Service Device Path Object Property Data Type Default Value Poll Interval

41 Project Conversion Property Network Value Mode Configuration Type Service Device Path Object Value Input or Output Database or Manual For INPUTS: Read Property Read Property Multiple COV Subscription Receive Broadcast COV For OUTPUTS: Write Property Write Property Multiple Send Local Broadcast COV Send Global Broadcast COV Select the device from a network tree For INPUTS: Select the BACnet object from the device that is being received from (and read by) the controller For OUTPUTS: Select the BACnet object from the device that is being sent to (and written to) the other controller Project Conversion The Project Conversion tool can save you both time and money in allowing you to reuse existing projects engineered in other protocols or devices.

42 CHAPTER 6 BACnet MS/TP TROUBLESHOOTING ISSUES TOPIC 8 Troubleshooting Issues 84

43 Troubleshooting Issues - Fault Conditions 85 Troubleshooting Issues - Status LED Interpretations 86

44 Troubleshooting Issues - Before Calling Tech Support Verifications Bus EOL termination Duplicate MACs Same Baud rate Incorrect polarity 87 Troubleshooting Issues - Before Calling Tech Support Verifications COV reporting MAC address gaps Non Daisy-chained Power: not > 5 devices 88

45 Troubleshooting Issues - Before Calling Tech Support Verifications Bus EOL termination BACK TO SUPPORT ISSUES Troubleshooting Issues - Before Calling Tech Support Verifications Duplicate MACs DIP Switches Binary settings BACK TO SUPPORT ISSUES

46 Troubleshooting Issues - Before Calling Tech Support Verifications Same Baud rate BACK TO SUPPORT ISSUES Troubleshooting Issues - Before Calling Tech Support Verifications Incorrect polarity BACK TO SUPPORT ISSUES

47 Troubleshooting Issues - Before Calling Tech Support Verifications Excess COV Reporting BACK TO SUPPORT ISSUES Troubleshooting Issues - Before Calling Tech Support Verifications MAC address gaps BACK TO SUPPORT ISSUES

48 Troubleshooting Issues - Before Calling Tech Support Verifications Non Daisy-chained BACK TO SUPPORT ISSUES Troubleshooting Issues - Before Calling Tech Support Verifications Power: Not > 5 devices BACK TO SUPPORT ISSUES

49 Review Questions What is the MAC address reserved for broadcasts? How do you set the MAC address of an ECB-VAV or -600 series controller? What is the Max Master and why is it important that it be changed from the default setting of 127? When should you set the Max Master for the network? What is the recommended limit for the total number of Distech BACnet devices allowed on a network? In what chapters of the Network Guide are the guidelines for Bacnet data bus fundamentals and associated troubleshooting? 97 BACK TO GETTING STARTED WITH BACNET MENU (CLICK HERE)

50 It s Quiz Time It s time to review what you ve learned. Click the QUIZ button to begin. If you wish to review first, click the REVIEW button below. REVIEW The QUIZ is still under development. So click again and we ll take you to the next module. NEXT MODULE