# BACnet write property

**URL:** <https://discourse.nodered.org/t/bacnet-write-property/12482>\
**Category:** General\
**Created:** [22 June 2019 10:18 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482 "2019-06-22T10:18:25Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![fordarn](https://avatars.discourse-cdn.com/v4/letter/f/49beb7/32.png) [@fordarn](https://discourse.nodered.org/u/fordarn)\
**Post date:** [22 June 2019 10:18 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/1 "2019-06-22T10:18:25Z")

</div>

Hi All  
New to Raspberry PI and Node Red.  
I have been playing all day and trying to integrate a BMS controller and a Pi together for home automation via BACnet (node-red-contrib-bacnet)

I have managed to get the read property working well but can not get the write property to operate. I have had a read through a few other forums and someone posted a Flow with the BACnet incorporated in the function blocks. But even when I use that I get an error Bacnet1 is not a function. The Flow link with the BACnet in the function is here.  
`[{"id":"15d5e7ae.0b9148","type":"function","z":"d0970a11.9662b8","name":"Boiler 1","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 4, instance: 0}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_ENUMERATED, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 4, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":280,"y":60,"wires":[[]]},{"id":"27f92a04.56b936","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":40,"wires":[["15d5e7ae.0b9148"]]},{"id":"7f877b3.3445c84","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":100,"wires":[["15d5e7ae.0b9148"]]},{"id":"f40377fd.dd75f8","type":"function","z":"d0970a11.9662b8","name":"Boiler 2","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 4, instance: 1}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_ENUMERATED, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 4, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":280,"y":180,"wires":[[]]},{"id":"7aa2b124.d3db","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":160,"wires":[["f40377fd.dd75f8"]]},{"id":"be93d9b0.4de308","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":200,"wires":[["f40377fd.dd75f8"]]},{"id":"2b65c434.8ee3ec","type":"function","z":"d0970a11.9662b8","name":"Analogue 1","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 1, instance: 0}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_REAL, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 1, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":467,"y":61,"wires":[[]]},{"id":"75607c38.ac6404","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"10","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":292,"y":24,"wires":[["2b65c434.8ee3ec"]]},{"id":"dc7a52e9.efd78","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":287,"y":100,"wires":[["2b65c434.8ee3ec"]]},{"id":"11fb3606.4d6c7a","type":"function","z":"d0970a11.9662b8","name":"Boiler 3","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 4, instance: 2}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_ENUMERATED, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 4, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":284,"y":291,"wires":[[]]},{"id":"b1d62ce7.c4434","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":260,"wires":[["11fb3606.4d6c7a"]]},{"id":"212d8c97.fa9ee4","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":300,"wires":[["11fb3606.4d6c7a"]]},{"id":"cd813c35.41c17","type":"function","z":"d0970a11.9662b8","name":"Boiler 4","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 4, instance: 3}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_ENUMERATED, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 4, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":280,"y":360,"wires":[[]]},{"id":"c9f1d2bf.e935d","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":340,"wires":[["cd813c35.41c17"]]},{"id":"8f64972e.6ae098","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":380,"wires":[["cd813c35.41c17"]]},{"id":"4ef5aaf0.92a8e4","type":"function","z":"d0970a11.9662b8","name":"Boiler 5","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 4, instance: 4}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_ENUMERATED, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 4, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":280,"y":440,"wires":[[]]},{"id":"c3863c40.8f205","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":420,"wires":[["4ef5aaf0.92a8e4"]]},{"id":"ddee3441.835ef8","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":460,"wires":[["4ef5aaf0.92a8e4"]]},{"id":"bc8cf13e.f5194","type":"function","z":"d0970a11.9662b8","name":"Boiler 6","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 4, instance: 5}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_ENUMERATED, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 4, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":280,"y":520,"wires":[[]]},{"id":"9489f179.b2f2a","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":500,"wires":[["bc8cf13e.f5194"]]},{"id":"80b506a.08ddcf8","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":110,"y":540,"wires":[["bc8cf13e.f5194"]]},{"id":"11758318.19362d","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"8.2","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":286,"y":140,"wires":[["202850e7.21513"]]},{"id":"c79384bd.06bdd8","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":289,"y":219,"wires":[["202850e7.21513"]]},{"id":"202850e7.21513","type":"function","z":"d0970a11.9662b8","name":"Analogue 2","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 1, instance: 1}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_REAL, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 1, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":476,"y":177,"wires":[[]]},{"id":"3a9d3099.c845b","type":"function","z":"d0970a11.9662b8","name":"Analogue 3","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 1, instance: 2}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_REAL, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 1, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":484,"y":284,"wires":[[]]},{"id":"971ea5c7.8c0af8","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"8.2","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":286,"y":254,"wires":[["3a9d3099.c845b"]]},{"id":"8a99a4ee.efb818","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":290,"y":325,"wires":[["3a9d3099.c845b"]]},{"id":"80cc3e75.4dc4c","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"8.2","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":289,"y":399,"wires":[["a576534f.8e20e"]]},{"id":"ef0eac12.cbebd","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":286,"y":477,"wires":[["a576534f.8e20e"]]},{"id":"a576534f.8e20e","type":"function","z":"d0970a11.9662b8","name":"Analogue 4","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 1, instance: 3}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_REAL, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 1, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":475,"y":368,"wires":[[]]},{"id":"ef566857.021028","type":"function","z":"d0970a11.9662b8","name":"Analogue 5","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 1, instance: 4}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_REAL, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 1, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":480,"y":447,"wires":[[]]},{"id":"fb3d2b91.ff6d88","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"8.2","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":288,"y":559,"wires":[["ef566857.021028"]]},{"id":"93594f0d.1e291","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":288,"y":600,"wires":[["ef566857.021028"]]},{"id":"a1291bf2.db1af8","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"8.2","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":291,"y":645,"wires":[["f681da4d.132e08"]]},{"id":"3fa05726.ff0778","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":290,"y":687,"wires":[["f681da4d.132e08"]]},{"id":"f681da4d.132e08","type":"function","z":"d0970a11.9662b8","name":"Analogue 6","func":"//var msg = {};\nconst bacnet1 = global.get('bacnet');\n// Initialize BACStack\nvar client = bacnet1({adpuTimeout: 6000});\nvar state = msg.payload;\n\nconst values = [\n {objectId: {type: 1, instance: 5}, values: [\n {property: {id: 85, index: 4294967295}, value: [{type: bacnet1.enum.ApplicationTags.BACNET_APPLICATION_TAG_REAL, value: state}], priority: 15}\n ]}\n];\nclient.writePropertyMultiple('192.168.1.135', values, (err, value) => {\n msg.payload = {value: value} ;\n \n if(err) { msg.payload = {error: err} ; }\n node.send(msg);\n});\n\nclient.readProperty('192.168.1.135', {type: 1, instance: 0}, 85, (err, value) => {\n msg.payload = {value: value} ;\n node.send(msg);\n})\n\n\nreturn msg;\n\n","outputs":1,"noerr":0,"x":475,"y":539,"wires":[[]]},{"id":"2ed8233c.85b35c","type":"BACnet-Read","z":"d0970a11.9662b8","name":"Boiler1 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Temp","rules":[{"t":"move","p":"payload.values.0.value","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":837,"y":223,"wires":[["9a31370a.241c98"]]},{"id":"9a31370a.241c98","type":"debug","z":"d0970a11.9662b8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":1030,"y":220,"wires":[]},{"id":"9719a00b.25475","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":472,"y":327,"wires":[["70d47e63.4aa15"]]},{"id":"70d47e63.4aa15","type":"BACnet-Read","z":"d0970a11.9662b8","name":"Boiler3 Temp","objectType":"0","objectInstance":"12","propertyId":"85","arrayIndex":"","deviceIPAddress":"192.168.1.135","server":"89bad991.cc9dd8","multipleRead":false,"x":658,"y":327,"wires":[["ffa78c3d.2f0fb"]]},{"id":"ffa78c3d.2f0fb","type":"change","z":"d0970a11.9662b8","name":"Boiler 3 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Temp","rules":[{"t":"move","p":"payload.values.0.value","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":850,"y":411,"wires":[["40635e2b.32f04"]]},{"id":"40635e2b.32f04","type":"debug","z":"d0970a11.9662b8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":1030,"y":420,"wires":[]},{"id":"a2d0c1b.807d94","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":479,"y":480,"wires":[["23f22f90.cb2d7"]]},{"id":"23f22f90.cb2d7","type":"BACnet-Read","z":"d0970a11.9662b8","name":"Boiler5 Temp","objectType":"0","objectInstance":"18","propertyId":"85","arrayIndex":"","deviceIPAddress":"192.168.1.135","server":"89bad991.cc9dd8","multipleRead":false,"x":661,"y":479,"wires":[["178ee65e.cda61a"]]},{"id":"178ee65e.cda61a","type":"change","z":"d0970a11.9662b8","name":"Boiler 5 Temp","rules":[{"t":"move","p":"payload.values.0.value","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":856,"y":476,"wires":[["aef6d27e.dbc62"]]},{"id":"aef6d27e.dbc62","type":"debug","z":"d0970a11.9662b8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":1030,"y":480,"wires":[]},{"id":"37129ba6.016984","type":"inject","z":"d0970a11.9662b8","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":486,"y":588,"wires":[["3a4af08b.4740a"]]},{"id":"3a4af08b.4740a","type":"BACnet-Read","z":"d0970a11.9662b8","name":"Boiler6 Temp","objectType":"0","objectInstance":"19","propertyId":"85","arrayIndex":"","deviceIPAddress":"192.168.1.135","server":"89bad991.cc9dd8","multipleRead":false,"x":662,"y":586,"wires":[["f6e56922.5ec2b8"]]},{"id":"f6e56922.5ec2b8","type":"change","z":"d0970a11.9662b8","name":"Boiler 6 Temp","rules":[{"t":"move","p":"payload.values.0.value","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":860,"y":580,"wires":[["c507ee20.bf069"]]},{"id":"c507ee20.bf069","type":"debug","z":"d0970a11.9662b8","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":1030,"y":580,"wires":[]},{"id":"89bad991.cc9dd8","type":"BACnet-Client","z":"","name":"","adpuTimeout":"3000","port":"47808","interface":"192.168.1.132","broadcastAddress":"192.168.1.255"}]`

If anyone has an idea why now BACnet1 is not a function and has worked in the past would be great

---

<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [22 June 2019 10:51 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/2 "2019-06-22T10:51:09Z")

</div>

Hi. Firstly, your flow will not be importable. Please edit your post and add ````` back ticks above and below ( [See here](https://discourse.nodered.org/t/how-to-share-code-or-flow-json/506) )

Some thoughts on the function version. It is likely they have `npm` added bacnet library to the .node-red folder manually and included a reference in settings.js. Then created a reference in global context.

Try going back to the original post, you may have missed something.

---

<div class="post-metadata">

**Author:** ![mtoko](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mtoko/32/138_2.png) [@mtoko](https://discourse.nodered.org/u/mtoko)\
**Post date:** [22 June 2019 14:52 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/3 "2019-06-22T14:52:20Z")

</div>

Hi Sorry that flow is mine 😊 I did work on this for some time with a lot of help from the developer of node-red-contrib-bacnet. You can read some of the information on Github at this link

> <https://github.com/biancode/node-red-contrib-bacnet/issues/8>

  
I did get a custom function to work by adding require bacstack to the settings file. but then a new connection is opened for each function so this is not really practical. There appears to be an issue with the underlying Bacstack library. I eventually had to give up and also there is not provision for Bacnet MS/TP. I have moved to using modbus BMS controllers and these work well

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<div class="post-metadata">

**Author:** ![fordarn](https://avatars.discourse-cdn.com/v4/letter/f/49beb7/32.png) [@fordarn](https://discourse.nodered.org/u/fordarn)\
**Post date:** [22 June 2019 22:31 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/4 "2019-06-22T22:31:48Z")

</div>

Thanks Mtoko  
Sorry to sound dumb could you elaborate on the setting changes you made, how did you add the Bacstak to the settings file.

Also with the Modbus I was thinking of going down this route as well but the device I am using is a Master only I can not find a Node package that let the PI operate as a slave did you have this problem?

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<div class="post-metadata">

**Author:** ![mtoko](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mtoko/32/138_2.png) [@mtoko](https://discourse.nodered.org/u/mtoko)\
**Post date:** [23 June 2019 07:42 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/5 "2019-06-23T07:42:52Z")

</div>

See the image below you add it in the settings.js under functionGlobalContext.

I would still consider using a modbus device, if you can send datasheet or information about the device you are planning to use I may be able to advise. I have used a few different ones and some are easier than others

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/b/b5e51d332e9bfbebf70ad3a87451764a1609def4.jpeg)

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<div class="post-metadata">

**Author:** ![fordarn](https://avatars.discourse-cdn.com/v4/letter/f/49beb7/32.png) [@fordarn](https://discourse.nodered.org/u/fordarn)\
**Post date:** [23 June 2019 08:42 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/6 "2019-06-23T08:42:14Z")

</div>

Thanks Mtoko  
I did enter the details in the settings.js as you pictured, but when I ran the function in the flow it would error stating bacnet1 was not recognised.

The device I am using is a native Bacnet device so Bacnet is preferred but it can also act as a Modbus master via TCP. It can read registers from other devices but does not provide registers to be read.

---

<div class="post-metadata">

**Author:** ![mtoko](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mtoko/32/138_2.png) [@mtoko](https://discourse.nodered.org/u/mtoko)\
**Post date:** [23 June 2019 10:33 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/7 "2019-06-23T10:33:19Z")

</div>

You could look at using the modbus Server node which will enable your device to read from Node Red. I have not used this but there this video does provide some explanation

---

<div class="post-metadata">

**Author:** ![ionware1](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ionware1/32/42424_2.png) [@ionware1](https://discourse.nodered.org/u/ionware1)\
**Post date:** [29 May 2021 04:18 UTC](https://discourse.nodered.org/t/bacnet-write-property/12482/8 "2021-05-29T04:18:26Z")

</div>

You could try our Orion IoT node-red flow solution [here](https://flows.nodered.org/flow/62cc521cb1f6498281800f007e80b014)

HTH 🙂