Carrier RTU-MP Integration Manual
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Carrier RTU-MP Integration Manual

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CARRIER CORPORATION ©2011
A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 48-50H-T-1SB · 1/27/2011

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  • Page 1 CARRIER CORPORATION ©2011 A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 48-50H-T-1SB · 1/27/2011...

  • Page 3: Table Of Contents

    FCC Compliance ..............................25 CE Compliance ..............................25 BACnet Compliance............................25 Appendix A- Network Points List for the RTU-MP ....................26 Appendix B - BACnet Protocol Implementation Conformance Statement ............32 BACnet Data Link Layer Options ........................33 Analog Input ............................34 Analog Output ............................
  • Page 4 Program ............................... 43 Schedule .............................. 43 Trend_log ............................. 44 Appendix D: Johnson Controls N2 Protocol Implementation Conformance Statement ........45 Appendix C: Modbus Protocol Implementation Conformance Statement............47 Appendix E: LonWorks Protocol Implementation Conformance Statement ............49 Index ................................... 51 RTU-MP Controller...

  • Page 5: Introduction

    DIP switches allow you choose your protocol and baud rate; BACnet, Modbus, Johnson N2 or LonWorks. This document will serve as the reference guide for integrating RTU-MP into the BAS. It should be read thoroughly, understood, and all functions performed by the group installing or commissioning the BAS.
  • Page 6 Introduction RTU-MP Controller...

  • Page 7: Safety Considerations

    NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury, death, and/or equipment damage. Disconnect all power to the unit before performing maintenance or service. Unit may automatically start if power is not disconnected. RTU-MP Controller...

  • Page 8: Wiring Inputs And Outputs

    Wiring Inputs and Outputs Wiring Inputs and Outputs RTU-MP Inputs and Outputs Table BACnet Type of I/O Connection Pin Object Numbers Name Point Name Inputs Space Temperature Sensor sptsens AI (10K Thermistor) J20 - 1, 2 Supply Air Temperature AI (10K Thermistor)

  • Page 9: Installation

    The RTU-MP is an effective solution to minimize the amount of equipment change necessary to communicate with different protocols. Currently, the four most common protocols are: BACnet, Modbus, N2, and LonWorks.

  • Page 10: Configuring The Rtu-Mp For Bacnet Ms/Tp

    Turn off the RTU-MP's power. NOTE Changes made to the switches when the RTU-MP is on will not take effect until the RTU-MP has been power cycled! Using the rotary switches SW1 and SW2, set a unique MS/TP MAC address for the RTU-MP. Set the MSB (SW1) switch to the tens digit of the address, and set the LSB (SW2) switch to the ones digit.

  • Page 11: Configuring The Rtu-Mp For Modbus Rtu

    (PICS). Turn off the RTU-MP's power. NOTE Changes made to the switches when the RTU-MP is on will not take effect until the RTU-MP has been power cycled! Using the rotary switches, set a unique Modbus slave address for the RTU-MP. Set the MSB (SW1) switch to the tens digit of the address, and set the LSB (SW2) switch to the ones digit.
  • Page 12 (9600, 19.2k, 38.4k, or 76.8k bps). NOTE Use the same baud rate and communication settings for all controllers on the network segment. The RTU-MP is fixed at 8 data bits, No Parity, and 1 Stop bit for this protocol's communications. Baud Selection Table...

  • Page 13: Configuring The Rtu-Mp For N2

    LSB (SW2) switch to the ones digit. Valid N2 slave addresses are 01-99. EXAMPLE To set the RTU-MP’s N2 slave address to 01, point the arrow on the MSB (SW1) switch to 0 and the arrow on the LSB (SW1) switch to 1.

  • Page 14: Lonworks

    Configuring the RTU-MP for LonWorks Option Card Turn off the RTU-MP's power. NOTES Changes made to the switches when the RTU-MP is on will not take effect until the RTU-MP has ○ been power cycled! The controller’s rotary address switches are not used when the LON-OC is installed. That’s because ○...
  • Page 15 The following example shows the DIP Switches set for 38.4k baud and the LON-OC enabled. Plug the LON-OC's ribbon cable into Comm Option Port J15 on the RTU-MP. See illustration below. CAUTION! The controller must be OFF before being connected.

  • Page 16: Commissioning The Rtu-Mp For Lonworks Communication

    External Interface File (XIF) information. LonWorks uses the XIF to determine the points (network variables) that are available from a device. The RTU-MP has a set of predefined network variables. These variables can be bound or accessed by the network management tool.

  • Page 17: Virtual Bacview

    Virtual BACview is a freeware software application that mimics the BACview6 Handheld. The USB Link cable (USB-L) is required to connect a computer to the RTU-MP board. The USB Link cable connects a PC's USB port to the J12 local access port on the RTU-MP. This program functions and operates identical to the BACview Handheld.
  • Page 18 2. Select 1 of the 12 months and 1 of the 31 days of that month. The RTU-MP will now ignore the Daily schedule for the specific day and time you selected and follow the Holiday Schedule for this period.

  • Page 19: Indoor Fan

    DI On/Off A hard-wired input on the RTU-MP will command the unit to start/stop. Inputs 3, 5, 8, and 9 on plug J5 can be hard-wired to command the unit to start/stop. NOTE Scheduling can either be controlled via the unit or the BAS, but NOT both.

  • Page 20: Economizer

    3 minute minimum time delay between staging up or down. Any time the compressors are running, the RTU-MP will stage down the compressors if the SAT becomes less than the cooling low supply air setpoint. After a compressor is staged off, it may be started again after a normal time--guard period and the supply air temperature has increased above the low supply air setpoint.

  • Page 21: Power Exhaust

    Power Exhaust If an optional exhaust fan is used and controlled by the RTU-MP, it can be enabled based on damper position or by occupancy. If configured for continuous occupied operation, it will be energized whenever the controller is in the occupied mode and disabled when in the noccupied mode.

  • Page 22: Indoor Air Quality

    Installation Indoor Air Quality If the optional indoor air quality sensor is installed, the RTU-MP will attempt to maintain indoor air quality within the space at the user-configured differential setpoint by modulating the outdoor air damper/economizer. The set point is the difference between the indoor air quality and an optional outdoor air quality sensor.

  • Page 23: Demand Limiting

    Demand Limiting If the RTU-MP receives a level 1 (one degree offset), 2 (two degree offset), or a 3 (4 degree offset) to the BACnet demand limit variable, the controller expands the heating and cooling setpoints by the configured demand limit setpoint value and remain in effect until the BACnet demand limit variable receives a 0 value.

  • Page 24: Troubleshooting

    Troubleshooting Troubleshooting The RTU-MP controller acts as an intelligent embedded thermostat to the rooftop unit, but can be monitored and controlled from a third party network. For this reason, there are 3 distinct components for troubleshooting. The three parts to the system are: •...

  • Page 25: Bacnet Mstp

    • Replace the RTU-MP. BACnet MSTP Check the following to troubleshoot your RTU-MP: Verify that the BAS and controller are both set to speak the BACnet MS/TP protocol on the Comm Selector DIP switches DS3 - DS6. Verify that the BAS and the controller are both set for the same baud rate: Comm Selector DIP switches DS2 and DS1 ○...
  • Page 26 Any positive integer is a valid number. The default is 10 and should be ideal for the majority of applications. In cases where the RTU-MP is the target of many requests, this number could be increased as high as 100 or 200.

  • Page 27: Modbus

    Modbus Check the following to troubleshoot your RTU-MP: Verify that the BAS and controller are both set to speak the Modbus RTU protocol on the Comm Selector DIP switches DS3 - DS6. Verify that the BAS and the controller are both set for the same baud rate: Comm Selector DIP switches DS2 and DS1 ○...

  • Page 28: Lonworks

    NOTE Refer to Appendix C for the Protocol Implementation Conformance Statement. LonWorks Check the following to troubleshoot your RTU-MP: Verify that the BAS and controller are both set to speak the LonWorks protocol: Comm Selector DIP switches DS3 - DS6 ○...

  • Page 29: Compliance

    ASHRAE. ASHRAE does not endorse, approve or test products for compliance with ASHRAE standards. Compliance of listed products to requirements of ASHRAE Standard 135 is the responsibility of the BACnet manufacturers Association (BMA). BTL ® is a registered trademark of the BMA. RTU-MP Controller...

  • Page 30: Appendix A- Network Points List For The Rtu-Mp

    Appendix A- Network Points List for the RTU-MP Appendix A- Network Points List for the RTU-MP RTU-MP Controller...
  • Page 31 RTU-MP Controller...
  • Page 32 Appendix A- Network Points List for the RTU-MP RTU-MP Controller...
  • Page 33 RTU-MP Controller...
  • Page 34 Appendix A- Network Points List for the RTU-MP RTU-MP Controller...
  • Page 35 RTU-MP Controller...

  • Page 36: Appendix B - Bacnet Protocol Implementation Conformance Statement

    BACnet Master Slave/Token Passing (MS/TP) is used for communicating BACnet over a sub-network of BACnet-only controllers. This is the default Carrier communications protocol. Each RTU-MP acts as an MS/TP Master. The speed of an MS/TP network can range from 9600 to 76.8K baud. Physical Addresses can be set from 01 to 99.

  • Page 37: Bacnet Data Link Layer Options

    BACnet/ IP Broadcast Messaging Device (BBMD) Does the BBMD support registrations by Foreign Devices? Character Sets Supported: Indicating support for multiple character sets does not imply that they can all be supported simultaneously. XX ANSI X3.4 XX IBM™/Microsoft™ DBCS RTU-MP Controller...

  • Page 38: Analog Input

    50 octets in length present_value limited by min_pres_value and max_pres_value properties notification_class must be valid notification_class time_delay 0 to 4294967295 Analog Output Analog Output, Analog Output (FM), and Analog Output (PWM): 1. Creatable? 2. Deletable? RTU-MP Controller...

  • Page 39: Analog Value (Par)

    4. Writeable Properties: cov_increment high_limit out_of_service deadband limit_enable present_value description low_limit relinquish_default device_type notification_class time_delay event_enable notify_type units 5. Proprietary properties: None 6. Range Restrictions: description limited to 50 octets in length present_value limited by min_pres_value and max_pres_value properties RTU-MP Controller...

  • Page 40: Analog Value (Rs)

    4. Writeable Properties: cov_increment high_limit notify_type deadband limit_enable out_of_service description low_limit time_delay event_enable notification_class units 5. Proprietary properties: None 6. Range Restrictions: description limited to 50 octets in length notification_class must be valid notification_class time_delay 0 to 4294967295 RTU-MP Controller...

  • Page 41: Binary Input

    Supported: active_text event_time_stamps notify_type change_of_state_count feedback_value reliability change_of_state_time inactive_text time_delay description minimum_off_time time_of_active_time_reset device_type minimum_on_time time_of_state_count_reset elapsed_active_time 4. Writeable Properties: active_text inactive_text out_of_service change_of_state_count minimum_off_time polarity description minimum_on_time present_value device_type notification_class relinquish_default elapsed_active_time notify_type time_delay event_enable RTU-MP Controller...

  • Page 42: Binary Value (Par), (Clock), And (Stat)

    5. Proprietary properties: None 6. Range Restrictions: active_text limited to 50 octets in length change_of_state_count 0 to 4294967295 description limited to 50 octets in length device_type limited to 50 octets in length RTU-MP Controller...

  • Page 43: Binary Value (Par), (Clock), And (Stat)

    0 to 4294967295 description limited to 50 octets in length elapsed_active_time 0 to 4294967295 inactive_text limited to 50 octets in length minimum_off_time 0 to 4294967295 minimum_on_time 0 to 4294967295 notification_class must be valid notification_class time_delay 0 to 4294967295 RTU-MP Controller...

  • Page 44: Binary Value (Module Alarm)

    1. Creatable? 2. Deletable? 3. Optional Properties Supported: description 4. Writeable Properties: date_list description 5. Proprietary properties: None 6. Range Restrictions: date_list limited to 30 BACnetCalendarEntrys description limited to 50 octets in length Device Device: 1. Creatable? 2. Deletable? RTU-MP Controller...

  • Page 45: File

    File File: 1. Creatable? 2. Deletable? 3. Optional Properties description Supported: 4. Writeable Properties: archive description file_type 5. Proprietary properties: None 6. Range Restrictions: description limited to 50 octets in length file_type limited to 50 octets in length RTU-MP Controller...

  • Page 46: Multi_State Value

    4. Writeable Properties: alarm_values fault_values out_of_service description notification_class time_delay event_enable notify_type 5. Proprietary properties: None 6. Range Restrictions: description limited to 50 octets in length notification_class must be valid notification_class present_value must be valid state time_delay 0 to 4294967295 RTU-MP Controller...

  • Page 47: Notification Class

    None 6. Range Restrictions: description limited to 50 octets in length program_location limited to 50 octets in length Schedule Schedule (ENUM) and Schedule (UNS): 1. Creatable? 2. Deletable? 3. Optional Properties priority_for_writing exception_schedule relinquish_default Supported: description priority_array weekly_schedule RTU-MP Controller...

  • Page 48: Trend_Log

    None 6. Range Restrictions: description limited to 50 octets in length log_interval 0 to 4294967295 notification_class must be valid notification_class notification_threshold 0 to 4294967295 record_count can only be written to 0 total_record_count can only be written to 0 RTU-MP Controller...

  • Page 49: Appendix D: Johnson Controls N2 Protocol Implementation Conformance Statement

    01 to 99. Product Description: The RTU-MP is a factory-installed rooftop controller that is capable of speaking multiple protocols. The RTU- MP controller speaks the Johnson N2 Open Protocol as described in the Metasys N2 System Protocol Specification (for Vendors) document, revision 6/13/96.
  • Page 50 Appendix D: Johnson Controls N2 Protocol Implementation Conformance Statement Read Analog Output Read Binary Output Read Internal Parameter Write Analog Input Write Binary Input Write Analog Output Write Binary Output Write Internal Parameter Override Analog Input Override Binary Input Override Internal Parameter Override Release Request RTU-MP Controller...

  • Page 51: Appendix C: Modbus Protocol Implementation Conformance Statement

    Product Names: RTU-MP Product Model Number: RTU-MP Protocol Description: The RTU-MP controller speaks the Modicon Modbus RTU/ASCII Protocol as described in the Modicon Modbus Protocol Reference Guide, PI-MBUS-300 Rev.J. Further details on the Modbus implementation are described below. Product Description: The RTU-MP is a factory-installed rooftop controller that is capable of speaking multiple protocols.
  • Page 52 Discrete Input (DI) 0 = Off, 1 = On 2 – Read Input Status 1 – Read Coil Status Discrete Output (DO) 0 = Off, 1 = On 5 – Force Single Coil 15 – Force Multiple Coils RTU-MP Controller...

  • Page 53: Appendix E: Lonworks Protocol Implementation Conformance Statement

    This accessory card must be ordered separately and is connected by attaching its ribbon cable into the J15 connector on the RTU-MP. The RTU-MP’s baud rate (DS1 and DS2 on SW3) must be set to 38.4k to communicate with the LON-OC. The address switches (SW1 and SW2) are not used with LonWorks.

  • Page 55: Index

    Indoor Air Quality • 18 Indoor fan • 15 Power Exhaust • 17 Scheduling • 13 Troubleshooting Troubleshooting for BACnet MS/TP • 21 Troubleshooting for LonWorks • 24 Troubleshooting for Modbus • 23 Troubleshooting for N2 • 23 Virtual BACview • 13 RTU-MP Controller...
  • Page 58 CARRIER CORPORATION ©2011 A member of the United Technologies Corporation family · Stock symbol UTX · Catalog No. 48-50H-T-1SB · 1/27/2011 RTU-MP Controller...

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