DVRF BMS Mapping points.pdf

[sesa437358_brid]

above attached file is regarding the mapping details of blue star vrv and I am integrated this with spacelynk through Modbus over rtu (rs 485) I have created the .json file for the same but it's not working. the .json that I created is attached below.

{

"manufacturer": "Blue Star",

"description": "Variable Refrigerant Volume",

"mapping": [

{ "name": "Actual Room Temperature", "bus_datatype": 7,"datatype":"int16",

"type": "inputregister", "address": 1, "value_multiplier": 0.1, "units": "°C" },

{ "name": "VRV on off", "bus_datatype": "int16", "type": "holdingregister","bus_datatype": 7,

"address": 1, "writable": true, "value_custom": {"0": "Off", "1": "On" } },

{ "name": "RUN MODE", "bus_datatype": "int16", "type": "holdingregister","bus_datatype": 7,

"address": 2, "writable": true, "value_custom": {"1": "Cool", "2": "Dry", "3": "Fan", "4": "Heat" } },

{ "name": "RUN FAN", "bus_datatype": "int16", "type": "holdingregister","bus_datatype": 7,

"address": 3, "writable": true, "value_custom": {"1": "Low", "2": "Medium", "3": "High", "4": "Auto" } },

{ "name": "SET TEMP", "bus_datatype": "int16", "type": "holdingregister","bus_datatype": 7,

"address": 4, "writable": true, "value_multiplier": 0.1, "units": "°C" }] , "manufacturer": "BLUESTAR",

"name": "VRV",

"product_range": "MODBUS CARD",

"description": "modbus - bluestar"

}

kindly support

[Anonymous user]

Hi Expert,

We did try with below scrip

[

{ "name": "Actual Room Temperature", "bus_datatype": 9, "datatype": "uint16", "type": "inputregister", "address": 0, "value_multiplier": 0.1, "units": "°C" }

{ "name": "VRV on off", "bus_datatype": 7, "datatype": "uint16","type": "register","address": 0, "writable": true, "value_custom": {"01": "Off", "10": "On" } },

{ "name": "Run Mode", "bus_datatype": 7, "datatype": "uint16", "type": "register", "address": 1, "writable": true, "value_custom": {"1": "Cool", "2": "Dry", "3": "Fan","4": "Heat",   } },

{ "name": "RUN FAN", "bus_datatype": 7, "datatype": "unit16","type": "register","address": 2, "writable": true, "value_custom": {"1": "Low", "2": "Medium", "3": "High", "4": "Auto" } },

{ "name": "SET TEMP", "bus_datatype": 9, "datatype": "unit16","type": "register","address": 3, "writable": true, "value_multiplier": 0.1, "units": "°C" }] ,

We mange to get the value, but unable to change the value via SL would like to seek for expert help on it.

[sesa437358_brid]

Hi Expert,

As of now Run mode command and on/off command  is working however many times the commands bounce back. Let say when I give on command the value changes to on but after 3-4 seconds the value again changes to off.

bit value for on/off   =  1:off ; 16:on

Also the blue star vrv is not taking the set point command . However on modscan it is working fine.

[sesa437358_brid]

Hi Team,

Rest of the commands are working as of now, only temperature set point command(writable) is not working. Can anyone help me out for the same. I am using below mentioned code.

{"name": "SET TEMP", "bus_datatype": 9, "datatype": "unit16","type": "register","address": 3, "writable": true, "value_multiplier": 0.1, "units": "°C" }