# Modbus install(nore-red-contrib-modbus)

**URL:** <https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526>\
**Category:** General\
**Created:** [20 August 2019 06:04 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526 "2019-08-20T06:04:17Z")\
**Posts on this page:** 17\
**Page:** 1

<div class="post-metadata">

**Author:** ![petrdolejs](https://avatars.discourse-cdn.com/v4/letter/p/eada6e/32.png) [@petrdolejs](https://discourse.nodered.org/u/petrdolejs)\
**Post date:** [20 August 2019 06:04 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/1 "2019-08-20T06:04:17Z")

</div>

Hello, I've problem with Modbus. When I install node-red-contrib-modbus it show me red alert in Manage palette where I find all installed nodes. And when I use Modbus Flex Getter it doesn't work. I also send my flow to friend and it works on his PC, so I believe the problem is that red alert. I also reinstall it but it still show the red alert.

Is here someone who knows what's the problem?

![node%20red%20modbus1](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/1/108522df7e95b3479a01ad0a78b7d2d122f93fa4.png)

---

<div class="post-metadata">

**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [20 August 2019 06:57 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/2 "2019-08-20T06:57:51Z")

</div>

When you start Node-RED, what version of node-RED and nodejs does it report?  
Also are there any errors reported?

---

<div class="post-metadata">

**Author:** ![petrdolejs](https://avatars.discourse-cdn.com/v4/letter/p/eada6e/32.png) [@petrdolejs](https://discourse.nodered.org/u/petrdolejs)\
**Post date:** [20 August 2019 07:00 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/3 "2019-08-20T07:00:57Z")

</div>

Node Red version: 0.19.5  
Node.js version: v6.10.3

When I try to use Modbus Flex Getter node I've got two errors

```auto
"SyntaxError: Unexpected token function"
"TypeError: Cannot read property 'registerForModbus' of null"

```

Any ideas what could be wrong or what should I do?

---

<div class="post-metadata">

**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [20 August 2019 07:03 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/4 "2019-08-20T07:03:04Z")

</div>

and what version of node-red-contrib-modbus have you installed?

You can check what version you have installed in the manage palette part of the node-red menu

---

<div class="post-metadata">

**Author:** ![petrdolejs](https://avatars.discourse-cdn.com/v4/letter/p/eada6e/32.png) [@petrdolejs](https://discourse.nodered.org/u/petrdolejs)\
**Post date:** [20 August 2019 07:04 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/5 "2019-08-20T07:04:43Z")

</div>

node-red-contrib-modbus: 4.1.3  
Is that a problem?

---

<div class="post-metadata">

**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [20 August 2019 07:05 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/6 "2019-08-20T07:05:32Z")

</div>

Please read the contrib-nodes readme [https://flows.nodered.org/node/node-red-contrib-modbus](https://flows.nodered.org/node/node-red-contrib-modbus)

---

<div class="post-metadata">

**Author:** ![petrdolejs](https://avatars.discourse-cdn.com/v4/letter/p/eada6e/32.png) [@petrdolejs](https://discourse.nodered.org/u/petrdolejs)\
**Post date:** [20 August 2019 07:09 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/7 "2019-08-20T07:09:21Z")

</div>

So when I have node.js v6.X I should install node-red-contrib-modbus v2.X ? Is that right?

---

<div class="post-metadata">

**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [20 August 2019 07:12 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/8 "2019-08-20T07:12:27Z")

</div>

Well personally I’d upgrade to Node-RED v0.20.x and therefore upgrade to nodejs v8 or v10 (first) and then install then correct version for that version of nodejs

---

<div class="post-metadata">

**Author:** ![petrdolejs](https://avatars.discourse-cdn.com/v4/letter/p/eada6e/32.png) [@petrdolejs](https://discourse.nodered.org/u/petrdolejs)\
**Post date:** [20 August 2019 07:45 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/9 "2019-08-20T07:45:28Z")

</div>

Does someone know how to update Node-red on groov EPIC ?

---

<div class="post-metadata">

**Author:** ![iungo](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/iungo/32/8099_2.png) [@iungo](https://discourse.nodered.org/u/iungo)\
**Post date:** [20 August 2019 07:47 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/10 "2019-08-20T07:47:31Z")

</div>

Ask manufacturer)

---

<div class="post-metadata">

**Author:** ![fjungen](https://avatars.discourse-cdn.com/v4/letter/f/839c29/32.png) [@fjungen](https://discourse.nodered.org/u/fjungen)\
**Post date:** [3 January 2020 14:01 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/11 "2020-01-03T14:01:39Z")

</div>

Hi There, hope somebody can help me

```auto
-----------------------------------------------------------
2020-01-03T13:35:33.296Z Install : node-red-contrib-modbus 5.2.0

2020-01-03T13:35:33.326Z npm install --no-audit --no-update-notifier --save --save-prefix="~" --production node-red-contrib-modbus@5.2.0
2020-01-03T13:36:41.818Z [out] 
2020-01-03T13:36:41.818Z [out] > @serialport/bindings@8.0.6 install /home/admin/.node-red/node_modules/@serialport/bindings
2020-01-03T13:36:41.818Z [out] > prebuild-install --tag-prefix @serialport/bindings@ || node-gyp rebuild
2020-01-03T13:36:41.818Z [out] 
2020-01-03T13:36:42.876Z [err] prebuild-install
2020-01-03T13:36:42.876Z [err] WARN install No prebuilt binaries found (target=13.5.0 runtime=node arch=x64 libc= platform=linux)
2020-01-03T13:36:45.356Z [out] make: Entering directory '/home/admin/.node-red/node_modules/@serialport/bindings/build'
2020-01-03T13:36:45.360Z [out] CXX(target) Release/obj.target/bindings/src/serialport.o
2020-01-03T13:36:52.734Z [out] CXX(target) Release/obj.target/bindings/src/serialport_unix.o
2020-01-03T13:36:57.373Z [out] CXX(target) Release/obj.target/bindings/src/poller.o
2020-01-03T13:37:02.609Z [out] CXX(target) Release/obj.target/bindings/src/serialport_linux.o
2020-01-03T13:37:02.761Z [out] SOLINK_MODULE(target) Release/obj.target/bindings.node
2020-01-03T13:37:03.382Z [out] COPY Release/bindings.node
2020-01-03T13:37:03.404Z [out] make: Leaving directory '/home/admin/.node-red/node_modules/@serialport/bindings/build'
2020-01-03T13:37:03.433Z [out] 
2020-01-03T13:37:03.433Z [out] > @serialport/bindings@2.0.8 install /home/admin/.node-red/node_modules/modbus-serial/node_modules/@serialport/bindings
2020-01-03T13:37:03.433Z [out] > prebuild-install --tag-prefix @serialport/bindings@ || node-gyp rebuild
2020-01-03T13:37:03.433Z [out] 
2020-01-03T13:37:05.033Z [err] prebuild-install
2020-01-03T13:37:05.033Z [err] WARN install No prebuilt binaries found (target=13.5.0 runtime=node arch=x64 libc= platform=linux)
2020-01-03T13:37:06.917Z [out] make: Entering directory '/home/admin/.node-red/node_modules/modbus-serial/node_modules/@serialport/bindings/build'
2020-01-03T13:37:06.920Z [out] CXX(target) Release/obj.target/bindings/src/serialport.o
2020-01-03T13:37:10.751Z [err] ../src/serialport.cpp: In function ‘void EIO_AfterGet(uv_work_t*)’:
2020-01-03T13:37:10.751Z [err] ../src/serialport.cpp:329:96: error: no matching function for call to ‘v8::Object::Set(v8::Local<v8::String>, Nan::imp::FactoryBase<v8::Boolean>::return_t)’
2020-01-03T13:37:10.751Z [err] results->Set(Nan::New<v8::String>("cts").ToLocalChecked(), Nan::New<v8::Boolean>(data->cts));
2020-01-03T13:37:10.751Z [err] ^
2020-01-03T13:37:10.752Z [err] In file included from /home/admin/.cache/node-gyp/13.5.0/include/node/node.h:63:0,
2020-01-03T13:37:10.752Z [err] from ../../../../../nan/nan.h:54,
2020-01-03T13:37:10.752Z [err] from ../src/./serialport.h:6,
2020-01-03T13:37:10.752Z [err] from ../src/serialport.cpp:1:
2020-01-03T13:37:10.752Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, v8::Local<v8::Value>, v8::Local<v8::Value>)
2020-01-03T13:37:10.752Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context,
2020-01-03T13:37:10.752Z [err] ^
2020-01-03T13:37:10.752Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:10.752Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, uint32_t, v8::Local<v8::Value>)
2020-01-03T13:37:10.752Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context, uint32_t index,
2020-01-03T13:37:10.752Z [err] ^
2020-01-03T13:37:10.752Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:10.759Z [err] ../src/serialport.cpp:330:96: error: no matching function for call to ‘v8::Object::Set(v8::Local<v8::String>, Nan::imp::FactoryBase<v8::Boolean>::return_t)’
2020-01-03T13:37:10.759Z [err] results->Set(Nan::New<v8::String>("dsr").ToLocalChecked(), Nan::New<v8::Boolean>(data->dsr));
2020-01-03T13:37:10.759Z [err] ^
2020-01-03T13:37:10.759Z [err] In file included from /home/admin/.cache/node-gyp/13.5.0/include/node/node.h:63:0,
2020-01-03T13:37:10.759Z [err] from ../../../../../nan/nan.h:54,
2020-01-03T13:37:10.759Z [err] from ../src/./serialport.h:6,
2020-01-03T13:37:10.759Z [err] from ../src/serialport.cpp:1:
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, v8::Local<v8::Value>, v8::Local<v8::Value>)
2020-01-03T13:37:10.759Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context,
2020-01-03T13:37:10.759Z [err] ^
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, uint32_t, v8::Local<v8::Value>)
2020-01-03T13:37:10.759Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context, uint32_t index,
2020-01-03T13:37:10.759Z [err] ^
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:10.759Z [err] ../src/serialport.cpp:331:96: error: no matching function for call to ‘v8::Object::Set(v8::Local<v8::String>, Nan::imp::FactoryBase<v8::Boolean>::return_t)’
2020-01-03T13:37:10.759Z [err] results->Set(Nan::New<v8::String>("dcd").ToLocalChecked(), Nan::New<v8::Boolean>(data->dcd));
2020-01-03T13:37:10.759Z [err] ^
2020-01-03T13:37:10.759Z [err] In file included from /home/admin/.cache/node-gyp/13.5.0/include/node/node.h:63:0,
2020-01-03T13:37:10.759Z [err] from ../../../../../nan/nan.h:54,
2020-01-03T13:37:10.759Z [err] from ../src/./serialport.h:6,
2020-01-03T13:37:10.759Z [err] from ../src/serialport.cpp:1:
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, v8::Local<v8::Value>, v8::Local<v8::Value>)
2020-01-03T13:37:10.759Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context,
2020-01-03T13:37:10.759Z [err] ^
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, uint32_t, v8::Local<v8::Value>)
2020-01-03T13:37:10.759Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context, uint32_t index,
2020-01-03T13:37:10.759Z [err] ^
2020-01-03T13:37:10.759Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:10.775Z [err] ../src/serialport.cpp: In function ‘void EIO_AfterGetBaudRate(uv_work_t*)’:
2020-01-03T13:37:10.775Z [err] ../src/serialport.cpp:378:106: error: no matching function for call to ‘v8::Object::Set(v8::Local<v8::String>, Nan::imp::IntegerFactory<v8::Integer>::return_t)’
2020-01-03T13:37:10.775Z [err] results->Set(Nan::New<v8::String>("baudRate").ToLocalChecked(), Nan::New<v8::Integer>(data->baudRate));
2020-01-03T13:37:10.775Z [err] ^
2020-01-03T13:37:10.775Z [err] In file included from /home/admin/.cache/node-gyp/13.5.0/include/node/node.h:63:0,
2020-01-03T13:37:10.775Z [err] from ../../../../../nan/nan.h:54,
2020-01-03T13:37:10.775Z [err] from ../src/./serialport.h:6,
2020-01-03T13:37:10.775Z [err] from ../src/serialport.cpp:1:
2020-01-03T13:37:10.775Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, v8::Local<v8::Value>, v8::Local<v8::Value>)
2020-01-03T13:37:10.775Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context,
2020-01-03T13:37:10.775Z [err] ^
2020-01-03T13:37:10.775Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3547:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:10.775Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate: v8::Maybe<bool> v8::Object::Set(v8::Local<v8::Context>, uint32_t, v8::Local<v8::Value>)
2020-01-03T13:37:10.775Z [err] V8_WARN_UNUSED_RESULT Maybe<bool> Set(Local<Context> context, uint32_t index,
2020-01-03T13:37:10.775Z [err] ^
2020-01-03T13:37:10.775Z [err] /home/admin/.cache/node-gyp/13.5.0/include/node/v8.h:3550:37: note: candidate expects 3 arguments, 2 provided
2020-01-03T13:37:11.256Z [out] bindings.target.mk:112: recipe for target 'Release/obj.target/bindings/src/serialport.o' failed
2020-01-03T13:37:11.256Z [out] make: Leaving directory '/home/admin/.node-red/node_modules/modbus-serial/node_modules/@serialport/bindings/build'
2020-01-03T13:37:11.257Z [err] make: *** [Release/obj.target/bindings/src/serialport.o] Error 1
2020-01-03T13:37:11.261Z [err] gyp
2020-01-03T13:37:11.262Z [err]  
2020-01-03T13:37:11.262Z [err] ERR! 
2020-01-03T13:37:11.262Z [err] build error
2020-01-03T13:37:11.272Z [err]  
2020-01-03T13:37:11.272Z [err] gyp ERR! stack Error: `make` failed with exit code: 2
2020-01-03T13:37:11.272Z [err] gyp ERR! stack at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:194:23)
2020-01-03T13:37:11.272Z [err] gyp ERR! stack at ChildProcess.emit (events.js:305:20)
2020-01-03T13:37:11.272Z [err] gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
2020-01-03T13:37:11.273Z [err] gyp ERR! 
2020-01-03T13:37:11.273Z [err] System Linux 4.4.0-130-generic
2020-01-03T13:37:11.273Z [err] gyp 
2020-01-03T13:37:11.273Z [err] ERR! 
2020-01-03T13:37:11.273Z [err] command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
2020-01-03T13:37:11.273Z [err] gyp 
2020-01-03T13:37:11.273Z [err] ERR!
2020-01-03T13:37:11.273Z [err] cwd
2020-01-03T13:37:11.274Z [err] /home/admin/.node-red/node_modules/modbus-serial/node_modules/@serialport/bindings
2020-01-03T13:37:11.274Z [err] gyp 
2020-01-03T13:37:11.274Z [err] ERR!
2020-01-03T13:37:11.274Z [err] node -v
2020-01-03T13:37:11.274Z [err] v13.5.0
2020-01-03T13:37:11.274Z [err] gyp 
2020-01-03T13:37:11.274Z [err] ERR!
2020-01-03T13:37:11.274Z [err] node-gyp -v
2020-01-03T13:37:11.274Z [err] v5.0.7
2020-01-03T13:37:11.274Z [err] gyp 
2020-01-03T13:37:11.275Z [err] ERR! 
2020-01-03T13:37:11.275Z [err] not ok 
2020-01-03T13:37:17.497Z [err] npm
2020-01-03T13:37:17.497Z [err] WARN node-red-contrib-ui-led@0.3.1 requires a peer of node-red-dashboard@2.14.x but none is installed. You must install peer dependencies yourself.
2020-01-03T13:37:17.499Z [err] npm 
2020-01-03T13:37:17.499Z [err] WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.11 (node_modules/fsevents):
2020-01-03T13:37:17.499Z [err] npm 
2020-01-03T13:37:17.499Z [err] WARN 
2020-01-03T13:37:17.500Z [err] notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.11: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
2020-01-03T13:37:17.501Z [err] 
2020-01-03T13:37:17.521Z [err] npm
2020-01-03T13:37:17.522Z [err]  
2020-01-03T13:37:17.522Z [err] ERR!
2020-01-03T13:37:17.522Z [err]  
2020-01-03T13:37:17.522Z [err] code
2020-01-03T13:37:17.523Z [err] ELIFECYCLE
2020-01-03T13:37:17.523Z [err] npm
2020-01-03T13:37:17.523Z [err]  
2020-01-03T13:37:17.524Z [err] ERR!
2020-01-03T13:37:17.524Z [err]  
2020-01-03T13:37:17.524Z [err] errno
2020-01-03T13:37:17.524Z [err] 1
2020-01-03T13:37:17.525Z [err] npm
2020-01-03T13:37:17.525Z [err]  
2020-01-03T13:37:17.526Z [err] ERR!
2020-01-03T13:37:17.526Z [err] @serialport/bindings@2.0.8 install: `prebuild-install --tag-prefix @serialport/bindings@ || node-gyp rebuild`
2020-01-03T13:37:17.526Z [err] npm
2020-01-03T13:37:17.527Z [err]  
2020-01-03T13:37:17.527Z [err] ERR!
2020-01-03T13:37:17.527Z [err] Exit status 1
2020-01-03T13:37:17.527Z [err] npm
2020-01-03T13:37:17.528Z [err]  
2020-01-03T13:37:17.528Z [err] ERR!
2020-01-03T13:37:17.528Z [err]  
2020-01-03T13:37:17.528Z [err] npm
2020-01-03T13:37:17.529Z [err]  
2020-01-03T13:37:17.529Z [err] ERR!
2020-01-03T13:37:17.529Z [err] Failed at the @serialport/bindings@2.0.8 install script.
2020-01-03T13:37:17.529Z [err] npm
2020-01-03T13:37:17.530Z [err]  
2020-01-03T13:37:17.530Z [err] ERR!
2020-01-03T13:37:17.530Z [err] This is probably not a problem with npm. There is likely additional logging output above.
2020-01-03T13:37:17.658Z [err] 
2020-01-03T13:37:17.658Z [err] npm ERR! A complete log of this run can be found in:
2020-01-03T13:37:17.658Z [err] npm 
2020-01-03T13:37:17.658Z [err] ERR! /home/admin/.npm/_logs/2020-01-03T13_37_17_633Z-debug.log
2020-01-03T13:37:17.731Z rc=1

```

---

<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:** [3 January 2020 15:24 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/12 "2020-01-03T15:24:43Z")

</div>

> [@fjungen](#):
>
> 2020-01-03T13:37:11.274Z [err] node -v  
> 2020-01-03T13:37:11.274Z [err] v13.5.0

Hi @fjungen, it appears you are using an [unsupported version of node.js](https://nodered.org/docs/faq/node-versions) (13.5.0). That may, or may not, be the problem. But I suggest you first install a supported version (preferably 10.x or 12.x). You should then re-install node-red and go to your .node-red folder and run  
`npm rebuild`  
to make sure everything already installed is rebuilt for the new version. Then try the serialport again.  
If you have further problems please also tell us which version of node-red you are using and what operating system.

---

<div class="post-metadata">

**Author:** ![fjungen](https://avatars.discourse-cdn.com/v4/letter/f/839c29/32.png) [@fjungen](https://discourse.nodered.org/u/fjungen)\
**Post date:** [3 January 2020 15:30 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/13 "2020-01-03T15:30:21Z")

</div>

Thanks Colin, appreciate the fast response, below the versions I am using

```auto
3 Jan 15:28:08 - [info] Node-RED version: v1.0.3
3 Jan 15:28:08 - [info] Node.js version: v13.5.0
3 Jan 15:28:08 - [info] Linux 4.4.0-130-generic x64 LE
3 Jan 15:28:09 - [info] Loading palette nodes
3 Jan 15:28:21 - [info] Dashboard version 2.19.3 started at /ui
3 Jan 15:28:21 - [info] Settings file : /home/admin/.node-red/settings.js
3 Jan 15:28:21 - [info] Context store : 'default' [module=memory]
3 Jan 15:28:21 - [info] User directory : /home/admin/.node-red
3 Jan 15:28:21 - [warn] Projects disabled : editorTheme.projects.enabled=false
3 Jan 15:28:21 - [info] Flows file : /home/admin/.node-red/flows_ubuntu.json
3 Jan 15:28:21 - [error] Uncaught Exception:
3 Jan 15:28:21 - [error] Error: listen EADDRINUSE: address already in use 0.0.0.0:1880
    at Server.setupListenHandle [as _listen2] (net.js:1308:16)
    at listenInCluster (net.js:1356:12)
    at doListen (net.js:1495:7)
    at processTicksAndRejections (internal/process/task_queues.js:85:21)

```

---

<div class="post-metadata">

**Author:** ![afelix](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/afelix/32/9743_2.png) [@afelix](https://discourse.nodered.org/u/afelix)\
**Post date:** [3 January 2020 15:57 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/14 "2020-01-03T15:57:48Z")

</div>

As far as I remember (there’s been multiple topics about this, use the forum search sorted on most recent) this specific node is currently unmaintained and doesn’t support any version above nodejs 8.

---

<div class="post-metadata">

**Author:** ![fjungen](https://avatars.discourse-cdn.com/v4/letter/f/839c29/32.png) [@fjungen](https://discourse.nodered.org/u/fjungen)\
**Post date:** [3 January 2020 16:36 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/15 "2020-01-03T16:36:17Z")

</div>

Thanks guys, downgrading to v12.14.0 worked !!

---

<div class="post-metadata">

**Author:** ![oscarpedraza85](https://avatars.discourse-cdn.com/v4/letter/o/9de053/32.png) [@oscarpedraza85](https://discourse.nodered.org/u/oscarpedraza85)\
**Post date:** [2 October 2024 19:10 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/16 "2024-10-02T19:10:39Z")

</div>

Good afternoom, I want know if i can use two node modbus read in a the same flow with ModbuSim.

---

<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:** [2 October 2024 20:43 UTC](https://discourse.nodered.org/t/modbus-install-nore-red-contrib-modbus/14526/17 "2024-10-02T20:43:49Z")

</div>

Welcome to the forum @oscarpedraza85

If ModbuSim is a modbus server simulator then the modbus nodes should work with it ok just as with a real modbus device.