Related Manuals for IntesisBox FJ-RC-MBS-1
Summary of Contents for IntesisBox FJ-RC-MBS-1
- Page 1 IntesisBox ® FJ-RC-MBS-1 v.2.5 Modbus RTU (EIA-485) Interface for Fujitsu air conditioners. User Manual Issue Date: 12/2017 r1.9 EN Order Codes: FJ-RC-MBS-1: Modbus RTU Interface for Fujitsu air conditioners...
- Page 2 FJ-RC-MBS-1 User’s Manual r1.9 EN © Intesis Software S.L.U. 2017. All Rights Reserved. Information in this document is subject to change without notice. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or any means electronic or mechanical, including photocopying and recording for any purpose other than the purchaser’s personal use without the written permission of Intesis Software S.L.U.
-
Page 3: Table Of Contents
FJ-RC-MBS-1 User’s Manual r1.9 EN INDEX Presentation ......................4 Connection ......................5 Connect to the AC indoor unit ................5 Connection to the EIA-485 bus ................6 Quick Start Guide ....................6 Modbus Interface Specification ................7 Modbus physical layer..................7 Modbus Registers .................... -
Page 4: Presentation
Controller • FJ-RC-MBS-1 Up to 63 IntesisBox devices can be installed in the same Modbus RTU bus. However, depending on the configured speed, the installation of Modbus Repeaters may be required 4/24 © Intesis Software S.L.U. - All rights reserved http://www.intesisbox.com... -
Page 5: Connection
Modbus RTU EIA-485 network. 2.1 Connect to the AC indoor unit The FJ-RC-MBS-1 connects directly to the Fujitsu BWR Bus, which is not provided within the interface. Depending on which controllers are available, the recommended connection’ methods are the following ones (details in Figure 2. -
Page 6: Connection To The Eia-485 Bus
4. Connect the EIA-485 bus to the connector EIA485 of the interface. 5. Close the AC indoor unit. 6. Check the DIP-Switch configuration of the IntesisBox interface and make sure it matches the current installation’s parameters (see section 4.3). By default, the interface is set to: Modbus Slave Address ... -
Page 7: Modbus Interface Specification
4. Modbus Interface Specification 4.1 Modbus physical layer FJ-RC-MBS-1 implements a Modbus RTU (Slave) interface, to be connected to an EIA-485 line. It performs 8N2 communication (8 data bits, no parity and 2 stop bit) with several available baud rates (2400 bps, 4800 bps, 9600 bps -default-, 19200 bps, 38400 bps, 57600 bps, 76800 bps and 115200 bps). - Page 8 0: No error present ▪ 65535(-1 if it is read as signed value): Error ▪ in the communication of FJ-RC-MBS-1 or Remote Controller with the AC unit. Any other error present, see the table at the ▪ end of this document.
-
Page 9: Configuration Registers
FJ-RC-MBS-1 User’s Manual r1.9 EN Register Address Register Address Description (protocol address) (PLC address) Status (feedback) 0: Not active (Default value) ▪ 1: Active (A window is open) ▪ Left/Right Vane pulse 1: Pulse ▪ Economy 0: Disabled ▪ 1: Enabled ▪... -
Page 10: Considerations On Temperature Registers
This register allows us to provide an external temperature’s sensor from the Modbus side. Fujitsu indoor unit does not allow on devices like FJ-RC-MBS-1 to provide directly temperature to be used as a reference of the control loop of the AC indoor unit. In order to overcome this limitation and enable the usage of an external temperature sensor (i.e.from Modbus side), FJ-RC-MBS-1 applies the following mechanism (only if “external... - Page 11 Fujitsu Remote Controller connected to the indoor unit and must be done by Fujitsu authorized installers while the AC is being installed. When FJ-RC-MBS-1 is set as “Master” of FG bus (BWR), the external temperature’s sensor connected to Modbus RTU EIA-485 network provides...
- Page 12 FJ-RC-MBS-1 User’s Manual r1.9 EN • Celsius value: Value in Modbus register is the temperature value in Celsius (i.e. a value “22” in the Modbus register must be interpreted as 22ºC). • Decicelsius value: Value in Modbus register is the temperature value in decicelsius (i.e.
-
Page 13: Dip-Switch Configuration Interface
User’s Manual r1.9 EN 4.3 DIP-switch Configuration Interface All the configuration values on FJ-RC-MBS-1 can be written and read from Modbus interface. Otherwise, some of them can also be setup from its on-board DIP-switch interface. The device has DIP-switches SW1, SW3 and SW4 on the following locations:... - Page 14 FJ-RC-MBS-1 User’s Manual r1.9 EN SW3/SW4 – Baud rate configuration SW3-P7..8 SW4-P3 Description 2400bps 4800bps 9600bps (Default value) 19200bps 38400bps 57600bps 76800bps 115200bps Table 4.2 SW3-SW4: Modbus baud rate SW4 – Degrees/Decidegrees (x10), temperature magnitude (ºC/ºF) and EIA-485 termination resistor.
- Page 15 FJ-RC-MBS-1 User’s Manual r1.9 EN SW3 – Modbus Slave address SW3-P1..6 SW3-P1..6 SW3-P1..6 SW3-P1..6 SW3-P1..6 Table 4.4 SW3: Modbus slave address 15/24 © Intesis Software S.L.U. - All rights reserved http://www.intesisbox.com This information is subject to change without notice Email info@intesisbox.com...
-
Page 16: Implemented Functions
FJ-RC-MBS-1 User’s Manual r1.9 EN 4.4 Implemented Functions FJ-RC-MBS-1 implements the following standard Modbus functions: 3: Read Holding Registers ▪ 4: Read Input Registers ▪ 6: Write Single Register ▪ 16: Write Multiple Registers (Despite this function is allowed, the interface does not ▪... -
Page 17: Eia-485 Bus. Termination Resistors And Fail-Safe Biasing Mechanism
This mechanism must be supplied by the Modbus Master. The FJ-RC-MBS-1 device includes an on-board terminator resistor of 120Ω that can be connected to the EIA-485 bus by using DIP-switch SW4. Some Modbus RTU EIA-485 Master devices can provide also internal 120Ω terminator resistor and/or fail safe biasing mechanism (Check the technical documentation of the Master device connected to the EIA-485 network in each case). -
Page 18: Mechanical And Electrical Features
FJ-RC-MBS-1 User’s Manual r1.9 EN 5. Mechanical and electrical features Plastic, type PC (UL 94 V-0) Net dimensions (dxwxh): Operation Enclosure 0ºC to +60ºC 93 x 53 x 58 mm / 3.7” x 2.1” x 2.3” Temperature Color: Light Grey. RAL 7035... -
Page 19: List Of Supported Ac Unit Types
FJ-RC-MBS-1 User’s Manual r1.9 EN 6. List of supported AC Unit Types. A list of Fujitsu indoor unit model’s references compatible with FJ-RC-MBS-1 and its available features can be found on this link: https://www.intesisbox.com/intesis/support/compatibilities/IntesisBox_FJ-RC-xxx-1_AC_Compatibility.pdf 19/24 © Intesis Software S.L.U. - All rights reserved http://www.intesisbox.com... -
Page 20: Error Codes
Error Code Remote Error Description Modbus Controller No active error 65535 Error in the communication of FJ-RC-MBS-1 or Remote Controller with (-1) the AC unit 7.2 RAC and VRF J-II / V-II / VR-II series Error in Error Code Remote... - Page 21 FJ-RC-MBS-1 User’s Manual r1.9 EN 3-way valve temperature sensor error Connected indoor unit error Indoor MANUAL AUTO switch error reverse VDD permanent stop protection VDD permanent stop protection Excessive high pressure protection on cooling P.F.C. circuit error Indoor signal error...
- Page 22 FJ-RC-MBS-1 User’s Manual r1.9 EN Indoor unit power supply circuit error Indoor unit communication circuit (wired remote controller) error Indoor unit room temp. thermistor error Indoor unit heat ex. temp. thermistor error Humidity sensor error Light sensor error Gas sensor error...
-
Page 23: Vrf V / S / J Series
FJ-RC-MBS-1 User’s Manual r1.9 EN Outdoor unit fan motor 2 error Outdoor unit 4-way valve error Outdoor unit coil (expansion valve) error Outdoor unit miscellaneous error Outdoor unit discharge temperature 1 error Outdoor unit discharge temperature 2 error Outdoor unit compressor temperature error... - Page 24 FJ-RC-MBS-1 User’s Manual r1.9 EN Blower temperature thermistor Error Drain Error Room temperature Error Indoor fan motor Error Standard wired remote Error V / S / J Standard wired token Error Series Network communication Error Node setting error Communication Error between Main PCB & Transmission Outdoor unit Error The devices with Software Version 2.1 (See Register Address PLC 51) and all previous versions...
Need help?
Do you have a question about the FJ-RC-MBS-1 and is the answer not in the manual?
Questions and answers