# Omron CJ2M CPU33 Connected! Cannot read data **URL:** https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604 **Category:** Industrial **Created:** [28 September 2021 07:54 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604 "2021-09-28T07:54:52Z") **Posts on this page:** 20 **Page:** 1
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [28 September 2021 07:54 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/1 "2021-09-28T07:54:52Z")
![232](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/a/e/ae5328a46063b3a844d3a7c2132e3fb38fc14210.jpeg) when i run the flow, it is connected to the plc but when i try to read data, timeout occur. Anyone have encounter this issue? Your help is highly appreciated.. ---
### 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: [28 September 2021 08:04 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/2 "2021-09-28T08:04:58Z")
It is likely the FINS parameters are incorrect on the config node or your PLC or the PLC routing table. Did you follow the info on the [readme](https://flows.nodered.org/node/node-red-contrib-omron-fins)? Also, read through the [closed issues](https://github.com/Steve-Mcl/node-red-contrib-omron-fins/issues?q=is%3Aissue+is%3Aclosed) on github If you still have an issue, let me know your PLC settings (IP address+subnet mask, TCP or UDP, port number, FINS Node Number setting on front dials, Routing table details AND a screenshot of the config node settings) ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 07:09 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/3 "2021-09-29T07:09:08Z")
![finudp](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/9/b/9be1353f39bcbca48d73baa4e92cdaa0b98505ad.jpeg) ![plcsr](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/1/e10f5ec198265870388f01bb06be8d03bfcd428b.jpeg) ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 07:09 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/4 "2021-09-29T07:09:49Z")
![raspi](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/a/5/a5892ae23140420b176cd8aa58ede52b1ce5e68d.jpeg) ![tcpip](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/7/77c1e3a5528d4bafcbea8f522011b8de52b0bd86.jpeg) ---
### 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: [29 September 2021 07:15 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/5 "2021-09-29T07:15:29Z")
You have protocol set incorrectly. Should be UDP ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 07:16 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/6 "2021-09-29T07:16:35Z")
![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/b/fb0e00e0a090f7c23117c2feb894e44801d2b509.png) I want to read the D03552, 32bit and this error occur ---
### 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: [29 September 2021 07:18 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/7 "2021-09-29T07:18:05Z")
32bit is 2 WORDs. You are only asking for 1 WORD Did you change connection protocol to UDP? ---
### 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: [29 September 2021 07:19 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/8 "2021-09-29T07:19:49Z")
For 32bit numbers, set the output to Buffer & use buffer parser to convert to 32bit. I'm sure there is a demo in the import examples (CTRL+I) ---
### 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: [29 September 2021 07:20 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/9 "2021-09-29T07:20:53Z")
Lastly, what are the node number dials on the front of the PLC set to? Show me a photo of the 2 node number dials. ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 07:24 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/10 "2021-09-29T07:24:34Z")
![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/5/2/52440b64bc43897360d3e5f266f517a612097061.png) i got this error when i change to udp, what do i need to set in the PLC side? i use CX one programmer ---
### 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: [29 September 2021 07:51 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/11 "2021-09-29T07:51:33Z")
Is your version of fins node up to date? I seem to remember a bug. Also, what version of nodejs is on your node-red machine? ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 07:52 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/12 "2021-09-29T07:52:10Z")
Steve, how can i find the node number? ---
### 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: [29 September 2021 07:52 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/13 "2021-09-29T07:52:48Z")
Physical rotary dials on front of plc. Take photo. Show me. ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 07:54 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/14 "2021-09-29T07:54:35Z")
![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/5/d5647a75fdc113b10fb1f8397aa7691fd80c13f1.png) ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 07:57 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/15 "2021-09-29T07:57:36Z")
![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/c/4cab5aa196d5cbc93ecd42a9dc2f85f533cb5d2f.png) ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 08:25 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/16 "2021-09-29T08:25:40Z")
![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/5/9/5934c51207eb9432caf5a28d32630298ed133d66.jpeg) his is the dial setup ---
### 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: [29 September 2021 08:28 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/17 "2021-09-29T08:28:57Z")
You mode number is set incorrectly. It should be the same as the last octet of the IP address. 2 options... - change dials to read `0 B` Or - Change PLC IP to `a.b.c.10` to match current node number setting. Then power off/on plc. ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 08:29 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/18 "2021-09-29T08:29:44Z")
![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/6/46b4f493591d172596a4c0f85af51fbd62b3d461.png) ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [29 September 2021 08:30 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/19 "2021-09-29T08:30:19Z")
Ok i will try it, on production line.. ---
### Author: ![DonCube](https://avatars.discourse-cdn.com/v4/letter/d/c37758/32.png) [@DonCube](https://discourse.nodered.org/u/DonCube) #### Post date: [30 September 2021 03:32 UTC](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604/20 "2021-09-30T03:32:11Z")
Steve, i have already change the dials to 0B and still i cannot read data. I have observe also that when i Inject using the UDP connect error is occur see image below..but when i use TCP it tell that it is connected. What can i change in the PLC setting? ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/1/b/1b992aa82c8ade8759a0734f97eae43cd26396a9.png) Do i need to change something in this setting? ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/1/3/132e1bf9e030228c1ba744142294ef48183946a0.png) [Next page](https://discourse.nodered.org/t/omron-cj2m-cpu33-connected-cannot-read-data/51604.md?page=2)