# Using Node Red change set value

**URL:** <https://discourse.nodered.org/t/using-node-red-change-set-value/66625>\
**Category:** General\
**Created:** [18 August 2022 21:55 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625 "2022-08-18T21:55:39Z")\
**Posts on this page:** 9\
**Page:** 1

<div class="post-metadata">

**Author:** ![keshavvasudeva](https://avatars.discourse-cdn.com/v4/letter/k/ad7895/32.png) [@keshavvasudeva](https://discourse.nodered.org/u/keshavvasudeva)\
**Post date:** [18 August 2022 21:55 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/1 "2022-08-18T21:55:39Z")

</div>

New to node red. Using it to read temperature from solo controllers and wish to change the set value based on a time delay. How can I do this? Would appreciate some assistance with the code as well

---

<div class="post-metadata">

**Author:** ![mickym2](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mickym2/32/36128_2.png) [@mickym2](https://discourse.nodered.org/u/mickym2)\
**Post date:** [18 August 2022 22:37 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/2 "2022-08-18T22:37:36Z")

</div>

Use several delay nodes or trigger nodes and set the temperature with a change node.

---

<div class="post-metadata">

**Author:** ![keshavvasudeva](https://avatars.discourse-cdn.com/v4/letter/k/ad7895/32.png) [@keshavvasudeva](https://discourse.nodered.org/u/keshavvasudeva)\
**Post date:** [18 August 2022 22:59 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/3 "2022-08-18T22:59:11Z")

</div>

Thanks for the response. I just did that, however, I am getting the following error: "Error: Modbus exception 4: Slave device failure (device reports internal error)"

---

<div class="post-metadata">

**Author:** ![mickym2](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mickym2/32/36128_2.png) [@mickym2](https://discourse.nodered.org/u/mickym2)\
**Post date:** [18 August 2022 23:02 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/4 "2022-08-18T23:02:58Z")

</div>

As I`m not using modbus, I can`t tell you what is the right format to set values. If you really want help then you should post your complete flow - may be there is someone who is using the same node types.

---

<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [19 August 2022 08:55 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/5 "2022-08-19T08:55:59Z")

</div>

> [@keshavvasudeva](#):
>
> Error: Modbus exception 4: Slave device failure (device reports internal error)"

That error relates to a modbus node. I suggest you start a new thread with modbus in the title so that those who know about modbus can respond. Also tell us more about the system. What devices you are using, etc.

---

<div class="post-metadata">

**Author:** ![keshavvasudeva](https://avatars.discourse-cdn.com/v4/letter/k/ad7895/32.png) [@keshavvasudeva](https://discourse.nodered.org/u/keshavvasudeva)\
**Post date:** [19 August 2022 12:48 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/6 "2022-08-19T12:48:20Z")

</div>

Here is my flow:  
[  
{  
"id": "20031d8490ba6ecf",  
"type": "tab",  
"label": "Flow 6",  
"disabled": false,  
"info": "",  
"env":   
},  
{  
"id": "497a97af721602c5",  
"type": "inject",  
"z": "20031d8490ba6ecf",  
"name": "timestamp #2",  
"props": [  
{  
"p": "payload"  
},  
{  
"p": "topic",  
"vt": "str"  
}  
],  
"repeat": "5",  
"crontab": "",  
"once": true,  
"onceDelay": 0.1,  
"topic": "",  
"payload": "",  
"payloadType": "date",  
"x": 140,  
"y": 120,  
"wires": [  
[  
"0272ea633ac1a0bd"  
]  
]  
},  
{  
"id": "0272ea633ac1a0bd",  
"type": "function",  
"z": "20031d8490ba6ecf",  
"name": "function 17",  
"func": "msg.payload = {\n value: msg.payload,\n 'fc': 3,\n 'unitid': 2,\n 'address': 4096,\n 'quantity': 2,\n}\nreturn msg;",  
"outputs": 1,  
"noerr": 0,  
"initialize": "",  
"finalize": "",  
"libs": ,  
"x": 380,  
"y": 120,  
"wires": [  
[  
"0bd6b7e8ed869159"  
]  
]  
},  
{  
"id": "0bd6b7e8ed869159",  
"type": "modbus-flex-getter",  
"z": "20031d8490ba6ecf",  
"name": "Modbus Flex Getter #2",  
"showStatusActivities": true,  
"showErrors": true,  
"logIOActivities": true,  
"server": "15f0abee0517431e",  
"useIOFile": false,  
"ioFile": "",  
"useIOForPayload": false,  
"emptyMsgOnFail": false,  
"keepMsgProperties": false,  
"x": 600,  
"y": 120,  
"wires": [  
[  
"d8034c3e7cf9d596"  
],  
[  
"ca8963d14068c3e5",  
"bc2f3d283b7cbaba"  
]  
]  
},  
{  
"id": "d8034c3e7cf9d596",  
"type": "modbus-response",  
"z": "20031d8490ba6ecf",  
"name": "Modbus Response #2",  
"registerShowMax": 20,  
"x": 860,  
"y": 80,  
"wires":   
},  
{  
"id": "bc2f3d283b7cbaba",  
"type": "function",  
"z": "20031d8490ba6ecf",  
"name": "function 18",  
"func": "var values = msg.payload.data;\nmsg.payload = {\n 'value': values,\n 'fc': 16,\n 'unitid': 1,\n 'address': 4096,\n 'quantity': 2\n}\nflow.set("PV\_unit2", msg.payload.value[0]);\nflow.set("SV\_unit2", msg.payload.value[1]);\nreturn msg;\n",  
"outputs": 1,  
"noerr": 0,  
"initialize": "",  
"finalize": "",  
"libs": ,  
"x": 220,  
"y": 200,  
"wires": [  
  
]  
},  
{  
"id": "463d243c57eb664f",  
"type": "debug",  
"z": "20031d8490ba6ecf",  
"name": "debug 3",  
"active": true,  
"tosidebar": true,  
"console": false,  
"tostatus": false,  
"complete": "msg.payload.value[0]",  
"targetType": "msg",  
"statusVal": "",  
"statusType": "auto",  
"x": 400,  
"y": 240,  
"wires":   
},  
{  
"id": "83fb8e885bf549f4",  
"type": "function",  
"z": "20031d8490ba6ecf",  
"name": "function 19",  
"func": "msg = {\n "topic": "INSERT INTO TestTable6 (PV, SV) values(" + "\'" + parseFloat(flow.get("PV") / 10) + "," + parseFloat(flow.get("SV") / 10) + ")"\n}\n\n",  
"outputs": 1,  
"noerr": 0,  
"initialize": "",  
"finalize": "",  
"libs": ,  
"x": 970,  
"y": 220,  
"wires": [  
  
]  
},  
{  
"id": "be048e6733c756db",  
"type": "inject",  
"z": "20031d8490ba6ecf",  
"name": "timestamp #3",  
"props": [  
{  
"p": "payload"  
},  
{  
"p": "topic",  
"vt": "str"  
}  
],  
"repeat": "",  
"crontab": "",  
"once": true,  
"onceDelay": 0.1,  
"topic": "",  
"payload": "",  
"payloadType": "date",  
"x": 140,  
"y": 360,  
"wires": [  
  
]  
},  
{  
"id": "ca8963d14068c3e5",  
"type": "function",  
"z": "20031d8490ba6ecf",  
"name": "function 24",  
"func": "msg.payload = {\n value: msg.payload,\n 'fc': 3,\n 'unitid': 3,\n 'address': 4096,\n 'quantity': 2,\n}\nreturn msg;",  
"outputs": 1,  
"noerr": 0,  
"initialize": "",  
"finalize": "",  
"libs": ,  
"x": 400,  
"y": 420,  
"wires": [  
[  
"635592dbc5eca5dc"  
]  
]  
},  
{  
"id": "635592dbc5eca5dc",  
"type": "modbus-flex-getter",  
"z": "20031d8490ba6ecf",  
"name": "Modbus Flex Getter #3",  
"showStatusActivities": true,  
"showErrors": true,  
"logIOActivities": false,  
"server": "15f0abee0517431e",  
"useIOFile": false,  
"ioFile": "",  
"useIOForPayload": false,  
"emptyMsgOnFail": false,  
"keepMsgProperties": false,  
"x": 620,  
"y": 420,  
"wires": [  
[  
"7b7a982b36b34038"  
],  
[  
"888a9332f530b3c9"  
]  
]  
},  
{  
"id": "7b7a982b36b34038",  
"type": "modbus-response",  
"z": "20031d8490ba6ecf",  
"name": "Modbus Response #3",  
"registerShowMax": 20,  
"x": 880,  
"y": 380,  
"wires":   
},  
{  
"id": "888a9332f530b3c9",  
"type": "function",  
"z": "20031d8490ba6ecf",  
"name": "function 25",  
"func": "var values = msg.payload.data;\nmsg.payload = {\n 'value': values,\n 'fc': 16,\n 'unitid': 3,\n 'address': 4096,\n 'quantity': 2\n}\nflow.set("PV\_unit3", msg.payload.value[0]);\nflow.set("SV\_unit3", msg.payload.value[1]);\nreturn msg;\n",  
"outputs": 1,  
"noerr": 0,  
"initialize": "",  
"finalize": "",  
"libs": ,  
"x": 240,  
"y": 500,  
"wires": [  
[  
"abd96f245c99afb5"  
]  
]  
},  
{  
"id": "af57a47bf7802dc9",  
"type": "debug",  
"z": "20031d8490ba6ecf",  
"name": "debug 5",  
"active": true,  
"tosidebar": true,  
"console": false,  
"tostatus": false,  
"complete": "msg.payload.value[0]",  
"targetType": "msg",  
"statusVal": "",  
"statusType": "auto",  
"x": 660,  
"y": 540,  
"wires":   
},  
{  
"id": "f923863d0195e214",  
"type": "inject",  
"z": "20031d8490ba6ecf",  
"name": "",  
"props": [  
{  
"p": "payload"  
},  
{  
"p": "topic",  
"vt": "str"  
}  
],  
"repeat": "60",  
"crontab": "",  
"once": false,  
"onceDelay": 0.1,  
"topic": "",  
"payload": "$now('[H01]:[m01]:[s01]','-0400')",  
"payloadType": "jsonata",  
"x": 190,  
"y": 800,  
"wires": [  
[  
"b5b441edefd63539"  
]  
]  
},  
{  
"id": "b5b441edefd63539",  
"type": "function",  
"z": "20031d8490ba6ecf",  
"name": "function 22",  
"func": "msg = {\n "topic": "INSERT INTO TestTable(Date, PV\_unit2, SV\_unit2, PV\_unit3, SV\_unit3) values(" + "\'" + msg.payload + "\'" + "," + parseFloat(flow.get("PV\_unit2") / 10) + "," + parseFloat(flow.get("SV\_unit2") / 10) + "," + parseFloat(flow.get("PV\_unit3") / 10) + "," + parseFloat(flow.get("SV\_unit3") / 10) + ")"\n}\nreturn msg;\n//msg = {\n// "topic": "INSERT INTO TestTable(Date, PV\_unit2, SV\_unit2) values(" + "\'" + msg.payload + "\'" + "," + parseFloat(flow.get("PV\_unit2") / 10) + "," + parseFloat(flow.get("SV\_unit2") / 10) + ")"\n//}\nreturn msg;\n//msg = {\n// "topic": "INSERT INTO TestTable(PV\_unit2, SV\_unit2) values(" + parseFloat(flow.get("PV\_unit2") / 10) + "," + parseFloat(flow.get("SV\_unit2") / 10) + ")"\n//}\n//return msg;\n//msg = {\n// "topic": "INSERT INTO TestTable(PV) values (" + "\'" + parseFloat(flow.get("PV\_unit2") / 10) +"\')"\n//}\n//return msg; \n\n\n// $now('[Y0001].[M01].[D01] [H01]:[m01]:[s01]','-0400')\n",  
"outputs": 1,  
"noerr": 0,  
"initialize": "",  
"finalize": "",  
"libs": ,  
"x": 410,  
"y": 800,  
"wires": [  
  
]  
},  
{  
"id": "ad045715973d2d8e",  
"type": "sqlite",  
"z": "20031d8490ba6ecf",  
"mydb": "7a153863ce933edb",  
"sqlquery": "msg.topic",  
"sql": "",  
"name": "",  
"x": 750,  
"y": 800,  
"wires": [  
  
]  
},  
{  
"id": "1e7226ab2b1a4535",  
"type": "modbus-flex-write",  
"z": "20031d8490ba6ecf",  
"name": "",  
"showStatusActivities": false,  
"showErrors": true,  
"server": "15f0abee0517431e",  
"emptyMsgOnFail": false,  
"keepMsgProperties": false,  
"x": 930,  
"y": 620,  
"wires": [  
,  
  
]  
},  
{  
"id": "e43068e26307ca64",  
"type": "inject",  
"z": "20031d8490ba6ecf",  
"name": "",  
"props": [  
{  
"p": "payload"  
},  
{  
"p": "topic",  
"vt": "str"  
}  
],  
"repeat": "",  
"crontab": "",  
"once": true,  
"onceDelay": "120",  
"topic": "",  
"payload": "",  
"payloadType": "date",  
"x": 130,  
"y": 620,  
"wires": [  
  
]  
},  
{  
"id": "41da58f6b123d1e1",  
"type": "function",  
"z": "20031d8490ba6ecf",  
"name": "function 26",  
"func": "/_\nvar values = msg.payload.data;\nflow.set("values", "1300")\nmsg.payload = {\n 'value': values,\n 'fc': 6,\n 'unitid': 3,\n 'address': 4098,\n 'quantity': 2\n}\n_/\n//flow.set("PV\_unit2", msg.payload.value[0]);\n//flow.set(msg.payload.value[1], "1300");\n//return msg;\n/_\nvar count = context.get('count') || 0;\ncount += 1;\n\nif (count \>= 72){\n //SV = 25;\n [//flow.set](https://flow.set)(msg.payload.value[1], 1300);\n flow.set("SV\_unit3", "1300")\n [//flow.set](https://flow.set)("PV\_unit2", msg.payload.value[0]);\n [//flow.set](https://flow.set)("SV\_unit2", msg.payload.value[1]);\n} else if (count \>= 24){\n //SV = 130\n flow.set(msg.payload.value[1], 900);\n} else if (count \>= 12){\n // SV = 90\n flow.set(msg.payload.value[1], 250);;\n}\n_/\n\n//flow.set("SV\_unit3", "1300")\n//return msg;\n//context.set("PV\_unit2", 80)\n//context.set("SV\_unit2", 80)\n/_\nvar values = msg.payload.data\nmsg.payload = {\n value: values,\n //value: flow.set(msg.payload.value[1], "1300"),\n //value: "SV\_unit3"\n 'fc': 6,\n 'unitid': 3,\n 'address': 4098,\n 'quantity': 2,\n}\nreturn msg;\n_/\n\n\n\n//var values = msg.payload.data;\n//msg.payload = {\n// 'value': values,\n // 'fc': 16,\n // 'unitid': 1,\n //'address': 4096,\n //'quantity': 2\n//}\n\n//flow.set("PV\_unit2", msg.payload.value[0]);\n//flow.set("SV\_unit2", msg.payload.value[1]);\n//return msg;\n\nvar values = msg.payload.data;\nmsg.payload = {\n 'value': values,\n 'fc': 16,\n 'unitid': 3,\n 'address': 4096,\n 'quantity': 2\n}",  
"outputs": 1,  
"noerr": 0,  
"initialize": "",  
"finalize": "",  
"libs": ,  
"x": 350,  
"y": 620,  
"wires": [  
  
]  
},  
{  
"id": "9554c05f0216f0b2",  
"type": "debug",  
"z": "20031d8490ba6ecf",  
"name": "debug 6",  
"active": true,  
"tosidebar": true,  
"console": false,  
"tostatus": false,  
"complete": "payload.value[1]",  
"targetType": "msg",  
"statusVal": "",  
"statusType": "auto",  
"x": 480,  
"y": 740,  
"wires":   
},  
{  
"id": "026aa49d96d0fd61",  
"type": "change",  
"z": "20031d8490ba6ecf",  
"name": "",  
"rules": [  
{  
"t": "set",  
"p": "payload.value[1]",  
"pt": "msg",  
"to": "1300",  
"tot": "num"  
}  
],  
"action": "",  
"property": "",  
"from": "",  
"to": "",  
"reg": false,  
"x": 630,  
"y": 620,  
"wires": [  
[  
"1e7226ab2b1a4535"  
]  
]  
},  
{  
"id": "abd96f245c99afb5",  
"type": "delay",  
"z": "20031d8490ba6ecf",  
"name": "",  
"pauseType": "delay",  
"timeout": "5",  
"timeoutUnits": "seconds",  
"rate": "1",  
"nbRateUnits": "1",  
"rateUnits": "second",  
"randomFirst": "1",  
"randomLast": "5",  
"randomUnits": "seconds",  
"drop": false,  
"allowrate": false,  
"outputs": 1,  
"x": 420,  
"y": 560,  
"wires": [  
[  
"026aa49d96d0fd61"  
]  
]  
},  
{  
"id": "15f0abee0517431e",  
"type": "modbus-client",  
"name": "Solo Temperature Controller - Master",  
"clienttype": "serial",  
"bufferCommands": true,  
"stateLogEnabled": true,  
"queueLogEnabled": true,  
"tcpHost": "127.0.0.1",  
"tcpPort": "502",  
"tcpType": "DEFAULT",  
"serialPort": "COM5",  
"serialType": "RTU-BUFFERD",  
"serialBaudrate": "9600",  
"serialDatabits": "8",  
"serialStopbits": "1",  
"serialParity": "even",  
"serialConnectionDelay": "100",  
"serialAsciiResponseStartDelimiter": "0x3A",  
"unit\_id": "1",  
"commandDelay": "1",  
"clientTimeout": "1000",  
"reconnectOnTimeout": true,  
"reconnectTimeout": "2000",  
"parallelUnitIdsAllowed": true  
},  
{  
"id": "7a153863ce933edb",  
"type": "sqlitedb",  
"db": "C:\Users\kvasudeva\Downloads\test30.db3",  
"mode": "RWC"  
}  
]

Relevant flow is flow 6.

I am using Solo 4896 for temperature control and DAQ. Let me know if you have any ideas.

---

<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [19 August 2022 19:26 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/7 "2022-08-19T19:26:05Z")

</div>

In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote `````)

````auto
``` 
   code goes here 
```

````

`You can edit and correct your post` by clicking the pencil ✏ icon.

See this post for more details - [How to share code or flow json](https://discourse.nodered.org/t/how-to-share-code-or-flow-json/506)

---

<div class="post-metadata">

**Author:** ![keshavvasudeva](https://avatars.discourse-cdn.com/v4/letter/k/ad7895/32.png) [@keshavvasudeva](https://discourse.nodered.org/u/keshavvasudeva)\
**Post date:** [20 August 2022 20:17 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/8 "2022-08-20T20:17:03Z")

</div>

Here is my code:

```auto
[
{
"id": "20031d8490ba6ecf",
"type": "tab",
"label": "Flow 6",
"disabled": false,
"info": "",
"env": 
},
{
"id": "497a97af721602c5",
"type": "inject",
"z": "20031d8490ba6ecf",
"name": "timestamp #2",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "5",
"crontab": "",
"once": true,
"onceDelay": 0.1,
"topic": "",
"payload": "",
"payloadType": "date",
"x": 140,
"y": 120,
"wires": [
[
"0272ea633ac1a0bd"
]
]
},
{
"id": "0272ea633ac1a0bd",
"type": "function",
"z": "20031d8490ba6ecf",
"name": "function 17",
"func": "msg.payload = {\n value: msg.payload,\n 'fc': 3,\n 'unitid': 2,\n 'address': 4096,\n 'quantity': 2,\n}\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": ,
"x": 380,
"y": 120,
"wires": [
[
"0bd6b7e8ed869159"
]
]
},
{
"id": "0bd6b7e8ed869159",
"type": "modbus-flex-getter",
"z": "20031d8490ba6ecf",
"name": "Modbus Flex Getter #2",
"showStatusActivities": true,
"showErrors": true,
"logIOActivities": true,
"server": "15f0abee0517431e",
"useIOFile": false,
"ioFile": "",
"useIOForPayload": false,
"emptyMsgOnFail": false,
"keepMsgProperties": false,
"x": 600,
"y": 120,
"wires": [
[
"d8034c3e7cf9d596"
],
[
"ca8963d14068c3e5",
"bc2f3d283b7cbaba"
]
]
},
{
"id": "d8034c3e7cf9d596",
"type": "modbus-response",
"z": "20031d8490ba6ecf",
"name": "Modbus Response #2",
"registerShowMax": 20,
"x": 860,
"y": 80,
"wires": 
},
{
"id": "bc2f3d283b7cbaba",
"type": "function",
"z": "20031d8490ba6ecf",
"name": "function 18",
"func": "var values = msg.payload.data;\nmsg.payload = {\n 'value': values,\n 'fc': 16,\n 'unitid': 1,\n 'address': 4096,\n 'quantity': 2\n}\nflow.set("PV_unit2", msg.payload.value[0]);\nflow.set("SV_unit2", msg.payload.value[1]);\nreturn msg;\n",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": ,
"x": 220,
"y": 200,
"wires": [

]
},
{
"id": "463d243c57eb664f",
"type": "debug",
"z": "20031d8490ba6ecf",
"name": "debug 3",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "msg.payload.value[0]",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 400,
"y": 240,
"wires": 
},
{
"id": "83fb8e885bf549f4",
"type": "function",
"z": "20031d8490ba6ecf",
"name": "function 19",
"func": "msg = {\n "topic": "INSERT INTO TestTable6 (PV, SV) values(" + "\'" + parseFloat(flow.get("PV") / 10) + "," + parseFloat(flow.get("SV") / 10) + ")"\n}\n\n",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": ,
"x": 970,
"y": 220,
"wires": [

]
},
{
"id": "be048e6733c756db",
"type": "inject",
"z": "20031d8490ba6ecf",
"name": "timestamp #3",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": true,
"onceDelay": 0.1,
"topic": "",
"payload": "",
"payloadType": "date",
"x": 140,
"y": 360,
"wires": [

]
},
{
"id": "ca8963d14068c3e5",
"type": "function",
"z": "20031d8490ba6ecf",
"name": "function 24",
"func": "msg.payload = {\n value: msg.payload,\n 'fc': 3,\n 'unitid': 3,\n 'address': 4096,\n 'quantity': 2,\n}\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": ,
"x": 400,
"y": 420,
"wires": [
[
"635592dbc5eca5dc"
]
]
},
{
"id": "635592dbc5eca5dc",
"type": "modbus-flex-getter",
"z": "20031d8490ba6ecf",
"name": "Modbus Flex Getter #3",
"showStatusActivities": true,
"showErrors": true,
"logIOActivities": false,
"server": "15f0abee0517431e",
"useIOFile": false,
"ioFile": "",
"useIOForPayload": false,
"emptyMsgOnFail": false,
"keepMsgProperties": false,
"x": 620,
"y": 420,
"wires": [
[
"7b7a982b36b34038"
],
[
"888a9332f530b3c9"
]
]
},
{
"id": "7b7a982b36b34038",
"type": "modbus-response",
"z": "20031d8490ba6ecf",
"name": "Modbus Response #3",
"registerShowMax": 20,
"x": 880,
"y": 380,
"wires": 
},
{
"id": "888a9332f530b3c9",
"type": "function",
"z": "20031d8490ba6ecf",
"name": "function 25",
"func": "var values = msg.payload.data;\nmsg.payload = {\n 'value': values,\n 'fc': 16,\n 'unitid': 3,\n 'address': 4096,\n 'quantity': 2\n}\nflow.set("PV_unit3", msg.payload.value[0]);\nflow.set("SV_unit3", msg.payload.value[1]);\nreturn msg;\n",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": ,
"x": 240,
"y": 500,
"wires": [
[
"abd96f245c99afb5"
]
]
},
{
"id": "af57a47bf7802dc9",
"type": "debug",
"z": "20031d8490ba6ecf",
"name": "debug 5",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "msg.payload.value[0]",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 660,
"y": 540,
"wires": 
},
{
"id": "f923863d0195e214",
"type": "inject",
"z": "20031d8490ba6ecf",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "60",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "$now('[H01]:[m01]:[s01]','-0400')",
"payloadType": "jsonata",
"x": 190,
"y": 800,
"wires": [
[
"b5b441edefd63539"
]
]
},
{
"id": "b5b441edefd63539",
"type": "function",
"z": "20031d8490ba6ecf",
"name": "function 22",
"func": "msg = {\n "topic": "INSERT INTO TestTable(Date, PV_unit2, SV_unit2, PV_unit3, SV_unit3) values(" + "\'" + msg.payload + "\'" + "," + parseFloat(flow.get("PV_unit2") / 10) + "," + parseFloat(flow.get("SV_unit2") / 10) + "," + parseFloat(flow.get("PV_unit3") / 10) + "," + parseFloat(flow.get("SV_unit3") / 10) + ")"\n}\nreturn msg;\n//msg = {\n// "topic": "INSERT INTO TestTable(Date, PV_unit2, SV_unit2) values(" + "\'" + msg.payload + "\'" + "," + parseFloat(flow.get("PV_unit2") / 10) + "," + parseFloat(flow.get("SV_unit2") / 10) + ")"\n//}\nreturn msg;\n//msg = {\n// "topic": "INSERT INTO TestTable(PV_unit2, SV_unit2) values(" + parseFloat(flow.get("PV_unit2") / 10) + "," + parseFloat(flow.get("SV_unit2") / 10) + ")"\n//}\n//return msg;\n//msg = {\n// "topic": "INSERT INTO TestTable(PV) values (" + "\'" + parseFloat(flow.get("PV_unit2") / 10) +"\')"\n//}\n//return msg; \n\n\n// $now('[Y0001].[M01].[D01] [H01]:[m01]:[s01]','-0400')\n",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": ,
"x": 410,
"y": 800,
"wires": [

]
},
{
"id": "ad045715973d2d8e",
"type": "sqlite",
"z": "20031d8490ba6ecf",
"mydb": "7a153863ce933edb",
"sqlquery": "msg.topic",
"sql": "",
"name": "",
"x": 750,
"y": 800,
"wires": [

]
},
{
"id": "1e7226ab2b1a4535",
"type": "modbus-flex-write",
"z": "20031d8490ba6ecf",
"name": "",
"showStatusActivities": false,
"showErrors": true,
"server": "15f0abee0517431e",
"emptyMsgOnFail": false,
"keepMsgProperties": false,
"x": 930,
"y": 620,
"wires": [
,

]
},
{
"id": "e43068e26307ca64",
"type": "inject",
"z": "20031d8490ba6ecf",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": true,
"onceDelay": "120",
"topic": "",
"payload": "",
"payloadType": "date",
"x": 130,
"y": 620,
"wires": [

]
},
{
"id": "41da58f6b123d1e1",
"type": "function",
"z": "20031d8490ba6ecf",
"name": "function 26",
"func": "/\nvar values = msg.payload.data;\nflow.set("values", "1300")\nmsg.payload = {\n 'value': values,\n 'fc': 6,\n 'unitid': 3,\n 'address': 4098,\n 'quantity': 2\n}\n/\n//flow.set("PV_unit2", msg.payload.value[0]);\n//flow.set(msg.payload.value[1], "1300");\n//return msg;\n/\nvar count = context.get('count') || 0;\ncount += 1;\n\nif (count >= 72){\n //SV = 25;\n //flow.set(msg.payload.value[1], 1300);\n flow.set("SV_unit3", "1300")\n //flow.set("PV_unit2", msg.payload.value[0]);\n //flow.set("SV_unit2", msg.payload.value[1]);\n} else if (count >= 24){\n //SV = 130\n flow.set(msg.payload.value[1], 900);\n} else if (count >= 12){\n // SV = 90\n flow.set(msg.payload.value[1], 250);;\n}\n/\n\n//flow.set("SV_unit3", "1300")\n//return msg;\n//context.set("PV_unit2", 80)\n//context.set("SV_unit2", 80)\n/\nvar values = msg.payload.data\nmsg.payload = {\n value: values,\n //value: flow.set(msg.payload.value[1], "1300"),\n //value: "SV_unit3"\n 'fc': 6,\n 'unitid': 3,\n 'address': 4098,\n 'quantity': 2,\n}\nreturn msg;\n/\n\n\n\n//var values = msg.payload.data;\n//msg.payload = {\n// 'value': values,\n // 'fc': 16,\n // 'unitid': 1,\n //'address': 4096,\n //'quantity': 2\n//}\n\n//flow.set("PV_unit2", msg.payload.value[0]);\n//flow.set("SV_unit2", msg.payload.value[1]);\n//return msg;\n\nvar values = msg.payload.data;\nmsg.payload = {\n 'value': values,\n 'fc': 16,\n 'unitid': 3,\n 'address': 4096,\n 'quantity': 2\n}",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": ,
"x": 350,
"y": 620,
"wires": [

]
},
{
"id": "9554c05f0216f0b2",
"type": "debug",
"z": "20031d8490ba6ecf",
"name": "debug 6",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload.value[1]",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 480,
"y": 740,
"wires": 
},
{
"id": "026aa49d96d0fd61",
"type": "change",
"z": "20031d8490ba6ecf",
"name": "",
"rules": [
{
"t": "set",
"p": "payload.value[1]",
"pt": "msg",
"to": "1300",
"tot": "num"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 630,
"y": 620,
"wires": [
[
"1e7226ab2b1a4535"
]
]
},
{
"id": "abd96f245c99afb5",
"type": "delay",
"z": "20031d8490ba6ecf",
"name": "",
"pauseType": "delay",
"timeout": "5",
"timeoutUnits": "seconds",
"rate": "1",
"nbRateUnits": "1",
"rateUnits": "second",
"randomFirst": "1",
"randomLast": "5",
"randomUnits": "seconds",
"drop": false,
"allowrate": false,
"outputs": 1,
"x": 420,
"y": 560,
"wires": [
[
"026aa49d96d0fd61"
]
]
},
{
"id": "15f0abee0517431e",
"type": "modbus-client",
"name": "Solo Temperature Controller - Master",
"clienttype": "serial",
"bufferCommands": true,
"stateLogEnabled": true,
"queueLogEnabled": true,
"tcpHost": "127.0.0.1",
"tcpPort": "502",
"tcpType": "DEFAULT",
"serialPort": "COM5",
"serialType": "RTU-BUFFERD",
"serialBaudrate": "9600",
"serialDatabits": "8",
"serialStopbits": "1",
"serialParity": "even",
"serialConnectionDelay": "100",
"serialAsciiResponseStartDelimiter": "0x3A",
"unit_id": "1",
"commandDelay": "1",
"clientTimeout": "1000",
"reconnectOnTimeout": true,
"reconnectTimeout": "2000",
"parallelUnitIdsAllowed": true
},
{
"id": "7a153863ce933edb",
"type": "sqlitedb",
"db": "C:\Users\kvasudeva\Downloads\test30.db3",
"mode": "RWC"
}
]

```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [19 October 2022 20:17 UTC](https://discourse.nodered.org/t/using-node-red-change-set-value/66625/9 "2022-10-19T20:17:55Z")

</div>

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