Carrier WSHP Open v3 Integration Manual

Also see for WSHP Open v3: Integration guide

WSHP Open v3 33Date: 06/30/2008Vendor Name: CarrierProduct Names: WSHP OpenProduct Model Number: Water Source Heat PumpProtocol Description:The WSHP Open controller speaks the Modicon Modbus RTU/ASCII Protocol as described in the Modicon ModbusProtocol Reference Guide, PI-MBUS-300 Rev.J. Further details on the Modbus implementation are describedbelow.Product Description:The WSHP Open is a factory-installed water source heat pump controller that is capable of speaking multipleprotocols.Serial Transmission Mode: Supported?RTU Slave onlyASCII Not supportedCommunicationTypes: Baud rates: Data Bits: Parity: Stop Bits:2-wire EIA-485, 9600, 19200,38400, 768008 None 1Function Codes: Purpose: Used with RegisterNumbers:01 – Read Coil Status Read Discrete Outputs 00001 - 0999902 – Read Input Status Read Discrete Inputs 10001 - 1999903 – Read Holding Registers Read Holding Registers 40001 - 4999904 – Read Input Registers Read Input Registers 30001 - 3999905 – Force Single Coil Write Discrete Outputs (single) 00001 - 0999906 – Preset Single Register Write Holding Registers (single) 40001 - 4999915 – Force Multiple Coils Write Discrete Outputs 00001 - 0999916 – Preset Multiple Coils Write Holding Registers 40001 - 49999Register Type: Range: Function Codes Used with thisRegister Type:Float Value (FLOAT) Single-Precision IEEE floating pointvalue3 – Read Holding Register6 – Preset Single Register16 – Preset Multiple RegisterUnsigned Integer (UINT) 0 - 655353 – Read Holding Register6 – Preset Single Register16 – Preset Multiple RegisterAppendix C: Modbus Protocol Implementation Conformance Statement