Installation & Maintenance Manual IM703-0 Group: McQuay Controls Date: October 2001 MicroTech II BACnet Communication Module Ethernet/IP ASHRAE 135, Annex J 10 BASE-T 1998 McQuay International
Contents Figures...2 Revision History...3 Reference Documents...3 General Information... 4 Description...5 Application...5 Component Data...6 Light Emitting Diodes (LEDs)...6 Headers...6 Installation... 7 Mounting...7 Installing a new MicroTech II BACnet Ethernet/IP Communications Module on the Main Control Board...7 Replacing a MicroTech II BACnet Ethernet/IP Communications Module on the Main Control Board...7 Integration... 11 Network Connection...11 BACnet/IP Addressing...11 Configuring the Unit Controller...12 Service Information...13 Test Procedures...13 Replaceable Parts List...13 Installation Kit...13 Figures Figure 1. BACnet Ethernet/IP Communications Module...5 Figure 2. Building Automation System...5 Figure 3. MicroTech II BACnet Ethernet/IP Communications Module Major Components...6 Figure 4. LonMark Communications Module Main Control Board...8 Figure 5. Mount BACnet Ethernet/IP Communications Module...9 Figure 6. BACnet Ethernet/IP Connection Schematic Diagram...9 Figure 7. BACnet Ethernet Network Cable Routing...10 2 IM703-0
Revision History IM703-0 October 2, 2001 Preliminary release Reference Documents Number IM696 OM137 OM138 ED15060 ANSI/ASHRAE 135-1995 Title MicroTech II Applied Rooftop Unit Controller Installation Manual MicroTech II Applied Rooftop Discharge Air Controller Operation Manual MicroTech II Applied Rooftop Space Comfort Controller Operation Manual MicroTech II Protocol Information Data Applied Rooftop BACnet A Data Communication Protocol for Building Automation and Control Networks Notice Copyright 2001 McQuay International, Minneapolis MN All rights reserved throughout the world. McQuay International reserves the right to change any information contained herein without prior notice. No guarantees are given as to the accuracy of information provided. McQuay and MicroTech are registered trademarks of McQuay International. All other trademarks are the property of their respective owners. IM703-0 3
General Information This manual contains the information you need to install this communications module, incorporate it into the network, and maintain it.! WARNING Electric shock hazard. Can cause personal injury or equipment damage. This equipment must be properly grounded. Connections and service to the MicroTech II control panel must be performed only by personnel that are knowledgeable in the operation of the equipment being controlled.! CAUTION Static sensitive components. Can cause equipment damage. Discharge any static electrical charge by touching the bare metal inside the control panel before performing any service work. Never unplug cables, circuit board terminal blocks, or power plugs while power is applied to the panel. NOTICE This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense. McQuay International disclaims any liability resulting from any interference or for the correction thereof. 4 IM703-0
2.60 in Description A MicroTech II BACnet Ethernet/IP Communications Module incorporates a MicroTech II unit controller into an Ethernet Local Area Network (LAN). It is the interface to the network to Building Automation Network using BACnet objects. The MicroTech II BACnet Ethernet/IP Communications Module is a printed circuit board that plugs onto the MicroTech II Main Control Board. Figure 1 shows an outline drawing of the BACnet Ethernet/IP Communications Module. Figure 1. BACnet Ethernet/IP Communications Module 4.00 in Application The MicroTech II BACnet Ethernet/IP Communications Module connects the MicroTech II unit controller to the building automation system (BAS) on a Ethernet Local Area Network. It is the interface adapter for the exchange of BACnet objects between the network and the unit controller. Figure 2 shows the communications module and unit controller integrated into a BAS. Figure 2. Building Automation System MicroTech II Main Control Board MicroTech II BACnet Ethernet I/P Communications Module Ethernet 10BASE-T Network MicroTech II Keypad IM703-0 5
Component Data Figure 3 shows the major components of the communications module. Figure 3. MicroTech II BACnet Ethernet/IP Communications Module Major Components Light Emitting Diodes (LEDs) The MicroTech II BACnet Ethernet/IP Communications Module has three LEDs to indicate communication activity and status of the communication module. LED Function RX Lights when the communications module is receiving data TX Lights when the communications module is transmitting data COL Lights when there is a collision on the Ethernet network Headers The two headers on the component side of the communications module connect the unit controller to the BACnet Ethernet/IP Communications Module through two sets of connector pins on the main control board. 6 IM703-0
Installation Mounting The MicroTech II BACnet Ethernet/IP Communications Module can be installed in the field or it can be installed in the factory. The module mounts on connector pins and is held in place with four plastic locking standoffs. The Ethernet network cable connects to an RJ45 jack on the main control board. Installing a new MicroTech II BACnet Ethernet/IP Communications Module on the Main Control Board You can add a new MicroTech II BACnet Ethernet/IP Communications Module to the system in order to incorporate it into an existing Ethernet network. The MicroTech II BACnet Ethernet/IP Communications Module is included in a kit (Part number 090016701) along with a cable harness and this manual. To install a new MicroTech II BACnet Ethernet/IP Communications Module on the MicroTech II Main Control Board 1. Remove power from the Main Control Board. 2. Locate the two empty connectors and four standoffs for the MicroTech II BACnet Ethernet/IP Communications Module on the Main Control Board. See Figure 4. 3. Orient the communications module so that the circuit side faces out (i.e., the component side faces down). Align the communications module so that the connector pins on the Main Control Board can penetrate the headers on the component side of the communications module. See Figure 5. 4. Push the MicroTech II BACnet Ethernet/IP Communications Module onto the connector pins and standoffs until you hear the faint click of the locking standoffs securing the module in place. 5. Connect the communications module to the network. See Figure 6. a. Route the network cable through an opening in the bottom of the cabinet, up the cable raceway, across the shelf below the Main Control Board, and up to the Main Control Board. See Figure 7. b. Plug the network cable into the RJ45 jack on the Main Control Board. 6. Apply power to the Main Control Board. Replacing a MicroTech II BACnet Ethernet/IP Communications Module on the Main Control Board You can replace a MicroTech II BACnet Ethernet/IP Communications Module on the Main Control Board. To replace a MicroTech II BACnet Ethernet/IP Communications Module on the MicroTech II Main Control Board 1. Remove power from the Main Control Board. 2. Locate the four standoffs for the communications module on the Main Control Board. See Figure 4. 3. Use a pliers or screwdriver to depress the barb on one standoff and gently pull the corner of the communications module over the barb. Be careful to not bend the communications module or misalign the connector pins. 4. Proceed to the other three corners, remove the communications module from each standoff, and pull the module over the standoffs. 5. Gently lift the communications module from the Main Control Board. IM703-0 7
6. Orient the replacement communications module so that the circuit side faces out (i.e., the component side faces down). Align the communications module so that the connector pins on the Main Control Board can penetrate the headers on the component side of the communications module. See Figure 5. 7. Push the communications module onto the connector pins and standoffs until you hear the faint click of the locking standoffs securing the module in place. 8. Connect the communications module to the network. See Figure 6. c. Ensure that the network cable is plugged into the RJ45 jack on the Main Control Board. 9. Apply power to the Main Control Board. Figure 4. LonMark Communications Module Main Control Board Location for LonWorks and MSTP BACnet Communications Modules LEDs Locking Standoff (4 places) RJ45 Jack BACnet Ethernet Network Connector 8 IM703-0
Figure 5. Mount BACnet Ethernet/IP Communications Module Figure 6. BACnet Ethernet/IP Connection Schematic Diagram Main Control Board (MCB) BACnet Ethernet Network RJ45 Modular Jack MicroTech II BACnet Ethernet Communications Module IM703-0 9
Figure 7. BACnet Ethernet Network Cable Routing Main Control Board BACnet Ethernet Comunications Module Cable Shelf Network Cable RJ45 Jack BACnet Ethernet Network Connection Cable Raceway Terminal Block TB2 Opening in the floor 10 IM703-0
Integration Network Connection BACnet/IP Addressing The BACnet/IP (B/IP) address of the MicroTech II Applied Rooftop Unit Controller in a BACnet/IP network consists of the four-octet IP address followed by the two-octet UDP (User Datagram Protocol) port number. The BACnet/IP address is a six-octet value analogous to a MAC address. The IP address portion of the BACnet/IP address must be unique in the BACnet/IP network segment. The default UDP port number in the MicroTech II Applied Rooftop Unit Controller is 47808 (BAC0 in hexadecimal). The device object of the MicroTech II Applied Rooftop Unit Controller contains an IP Subnet Mask (Default subnet mask is 255.255.0.0) and a unique IP address. The controller does not support DHCP (Dynamic Host Configuration Protocol) IP addressing. The MicroTech II Applied Rooftop Unit Controller can be incorporated into an Ethernet network dedicated to BACnet devices only or an Ethernet network shared with BACnet devices and other devices. Dedicated BACnet Networks For an Ethernet network dedicated to BACnet devices only, the default IP address and IP Subnet Mask in the MicroTech II Applied Rooftop Unit Controller device object may be used. The default IP Address of the controller is written in the device object and can be determined in one of two ways: 1. Construct the IP Address from the MAC Address of the controller (the MAC address is the 18- digit [six-octet] number on the label affixed to the Main Control Board): IP Address Octet Method Range 1 (Most Significant) 172 (this value is fixed) 172 2 16 (this value is fixed) 16 3 Either 64 + Logical AND of the Fifth Octet of the MAC Address and 63 or 64 + (Fifth Octet of the MAC Address) Mod 64 64-127 4 (Least Significant) Sixth Octet of the MAC Address 0-255 The method you use to find the third octet requires further explanation. Either method gives the same answer for this modulus (64). The first method requires that you convert the Fifth Octet of the MAC Address to a binary number and logically AND it bit-by-corresponding-bit with 63 (3F in hex or 00111111 in binary) and then convert the result to a decimal value and add it to 64. The second method adds 64 to the Fifth Octet of the MAC Address Modulus 64. The result of the Modulus operation is the remainder only (ignore the quotient) of dividing the fifth octet by 64. For example 20 mod 64 is 20 and 65 mod 64 is 1. For example, for a MicroTech II Applied Rooftop Unit Controller with a MAC Address of 0.16.141.0.54.190, the IP address would be 172.16.118.190. 54 = 110110; (110110 AND 111111 = 110110 =.54); 54 + 64 = 118 54 mod 64 = 54; 54 + 64 = 118 IM703-0 11
Note: You can use the scientific version of the Windows calculator on you computer to make either of these calculations. 2. Read IP Address property from the device object using a service tool or another BACnet device. To set the IP Address of other BACnet IP devices (workstations, routers, controllers) in the dedicated BACnet Ethernet network select IP Addresses with the first two octets the same as the IP Address of the controller (the default subnet mask is 255.255.0.0), and the third and fourth octets close to the third and fourth octets of the MicroTech II Applied Rooftop Unit Controller IP Address. For example, assign the IP Address of the workstation to 172.16.118.191 for the controller in the previous example. Use the same IP Mask in the workstation as in the controller (255.255.0.0). Shared BACnet Networks Integrating the MicroTech II Applied Rooftop Unit Controller into a shared Ethernet LAN requires close cooperation with the network administrator of the shared Ethernet network. First, obtain the IP Subnet Mask of the shared network from the network administrator. Then, obtain static IP Addresses for all MicroTech II Applied Rooftop Unit Controllers you are integrating into the shared network. Finally obtain the address of an IP Router to use for sending IP messages to and from the BACnet IP subnets. Once you have these, write them to the IP Address, IP Mask, and IP Router Address properties of the device object in the MicroTech II Applied Rooftop Unit Controller. The default BACnet/IP Network Address in the MicroTech II controller is 1001. The Network Address must be unique for each BACnet network segment. All BACnet/IP devices on all Ethernet segments must have the same BACnet/IP Network Address. This is the Network Address property of the device object of the MicroTech II Applied Rooftop Unit Controller. Finally, the Communication Option property of the MicroTech II Applied Rooftop Unit Controller device object must be set to NONE for BACnet IP communications to take place. NONE is the default value for this property. Configuring the Unit Controller The MicroTech II Main Control Board and BACnet Ethernet/IP Communications Module are loaded with software, programmed, and configured at the factory as a unit controller. The unit is ready to operate with the default values of the various parameters set at the factory. Default values may be changed with the unit s keypad or via the network. See the appropriate operation manual for default values and keypad operating instructions and see the appropriate MicroTech II Protocol Information Data for descriptions of the network variables. See Reference Documents for part numbers. 12 IM703-0
Service Information Test Procedures Replaceable Parts List If you can control the unit from its keypad, but you are not able to communicate with unit via the network: Check the network wiring Check communications Use the standard TCP/IP suite of protocols to check your connectivity with other devices. For example, type ping <IP address of the MicroTech II BACnet Ethernet/IP Communications Module>. If you get a response from that IP address, you are connected to the BACnet Ethernet/IP Communications Module. Use the Transmit LED to determine whether data is reaching the output connector; use the Receive LED to determine whether any responses are being received. If the MicroTech II BACnet Ethernet/IP Communications Module still does not respond, replace the communications module with a new one. Installation Kit Component Description Part No. Kit, Ethernet Installation Kit for BACnet Ethernet/IP Communications Module 0900167-01 IM703-0 13
13600 Industrial Park Boulevard, P.O. Box 1551, Minneapolis, MN 55440 USA (612) 553-5330