Micro800 Message MSG to Read a Controllogix or Compactlogix 

You are so welcome!

Glad it was helpful Alonso!

Thanks for the sub Luciano!

You are welcome!

Glad it was helpful Fernando!

@@TimWilborne Thank you sir,I did for Micro800 to compact logix in both sides, according to your 2 videos and it worked perfectly. We have a project in where we will use 11-13 plcs,we are checking this option or the other consumed and produced tags,what in your experience, do you recommend? Also in one video (I think the girl in the video is your wife),she said you have a control store(it that means you sell allen bradley stuff?,I´m sending this message from Mexico

Great 👍

I haven't played with sockets on the micro800 and can't recall if they are available.

Hi Brian, it is a future video, stay tuned.

I tried this and I am getting Status Error 224 SubError 4? Any suggestions?

@@brianwallace1247 That isn't a common error code, looks like you'll have to dig into the CIP specification to find that one.

Great question James because that isn't along the same vein. You want to use Produced and Consumed tags. Here is a video on that. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ABOAHyLcgSM.html

Hi Laura. I haven't and based off of the RsLogix 500 to Studio 5000 converter tool, I wouldn't recommend it. The main reason is it makes you skip taking advantage of one of the best features of CCW, the tag based addressing. I've seen some programs that have used these conversions and there is nothing worse then looking in a Studio 5000 or CCW program and finding a tag array named "N7". I hope that helps and thanks for watching!

It is on the list, stay tuned.

That would be worthwhile for a video but I don't believe I have ever done it. The issue is, even if you get the error bit, then next time your trigger your message instruction, it will set it back to 0 until it times out again. I would put a Go Look for a 1, examine on, for the error bit then two MOVs with the sources being the errorid and the suberrorid. That way you get the actual error values and they will stay once the error bit is cleared. Then you can use the DN bit of the message and MOV 0s to the stored codes one the connection is reestablished.

That would be a good one, I should do a general PLC to PLC messaging video.

@@TimWilborne that would be awesome. I've seen only Modbus RTU communication between Micro820 Modbus RTU master and MicroLogix 1100 slave to exchange data. I am afraid it's not possible to use MSG block and ethernet ports to do so. I can do it with a CompactLogix 1769-L32E and a MicroLogix 1100, but not with the Micro820 and ML 1100. I would be very thankful if you help our community.

Yes it is possible. I've done it before, I just never made a video on it.

Copy it to a dint then copy it to a real on the other side. Depending on the brand, you may have to swap bytes or words

@@TimWilborne thank you!

I'm not familiar with that service but modbus is a protocol that many brands support.

Yes, you can

Make sure you use the complete path which would be 192.168.1.40,1,0

It is possible. I know some people that have done it. I'm playing with a raspberry pi right now, I'll see how much extra time I have on the project.

It is possible to write but I prefer to read because it makes to easier when looking at the program too determine where the data is coming from.

That tells the message instruction to go out the Ethernet port.

​@@TimWilborne After comparing the read message path between this video and its counterpart, I noticed that in the CompactLogix the port was set to 2 versus 4 in the Micro820. Would that difference in port number be the primary difference in messaging with the Micro820 and a CompactLogix? I am having an issue with allowing a third party device to write to three array tags in a Micro820. The manufacturer advertises the device communicating to CLX/CPX and when asked about the Micro800 line, they said it wouldn't be an issue. Now that I have the devices connected and not communicating, I had them inspect the three array tags in the Micro820 program to verify they were as instructed, their "Allen-Bradley" expert only could replay with "maybe it can't talk to the Micro820 like the Control and CompactLogix" and left it at that.

A bit value is simply 1 of the 16 bits of an INT or 1 of 32 bits of a DINT

@@TimWilborne THX!

You are welcome!

Yes, you do it the same way. One thing I didn't realize when making this video is you can specify the data type instead of doing the conversion, it is on the list to cover.

Not following you, the Micro800 isn't a chassis based PLC. Each communications port on it has a assigned number, then the IP address of the destination device.

@Tim Wilborne I set up a Micro850, with a message exactly like in your video, to read data from a Controllogix processor on the same network. The controllogix processor is connected to the network through an Ethernet module. The enet cable is not hooked directly to the Controllogix processor, like it is in your lab setup. I set the target config path to the IP address of the Controllogix processor, but the Micro850 is not reading the data. I am guessing that it is because I am going through an Enet module on the way to the Controllogix processor. I started the address with "4," like you stated. I am just wonder what the address should be when routing through the Enet module that resides in the Controllogix chasis. Will it be different if I am not connecting the Enet cable directly to the Controllogix processor?

@@bowhunt9968 I was going through a module too. What's your full path?

Here is how to read from a Micro800 to a Controllogix. twcontrols.com/lessons/how-to-read-data-from-an-allen-bradley-micro800-plc-to-a-controllogix-compactlogix-plc-using-message

Class instance and attribute have to do with communicating to other devices through CIP. For the most part, the manufacturer will tell you which ones to use to communicate with their particular device.

Probably not the same. You will need to see what compatible communication methods there are between your analyzer and the Micro870.

No, you would need to convert them on both ends

@@TimWilborne Actually, i found a way to do it, using the copy only on the micro820 that i was using to read. i could send you the pdf i used if you like.

Yes post it for us please

drive.google.com/file/d/1Imr9xUEg1XTTDD3u7JeBgljX0KR0QCFC/view?usp=sharing

It is a Panelview 800. Here is a series I did on it. twcontrols.com/allen-bradley-panelview-lessons

Hi Nathan, I'm short on time this week so I would post your question at plcs.net

For some reason I never have. You would use the CIP read. I'll put it on the list to do something with

Have a look at the COP instruction.

@@TimWilborne Thank you for helping Mr. This COP function works greately!!

Hi Rob, that would take some work and while it might be a fun challenge, but I'm not following how you are going to use it to see how long a machine has cycle. Why not just use an RTO instruction that is enabled whenever the machine is cycling? The hours, minutes, and seconds are easy enough, then you would have to use IF then's to determin the value to put in for the month since each month doesn't have the same amount of days. Then you have years...which are doable through an equation to account for leap years but good grief...that's a lot of work.

@@TimWilborne Thanks Tim, I did the whole seconds thing fairly easily in a Compact Logix by calling GSV with a 'currentvalue' argument (but it's in microseconds), I was hoping the Micro820 might have the same thing that I didn't know about. I'll probably touch base with Tech Support and if I don't get the answer I want I'll go with your RTO suggestion.

@@TimWilborne FYI, I found a workaround: format the RTC date data into a string using ANY_TO_STRING (formatting YYYY-MM-DD), then do ANY_TO_DATE on that and follow that with ANY_TO_DINT. It returns the number of seconds since 1-1-1970 to that day. Then add it to the time variable formatted in seconds of day.

@@willpowerfan That is a a good one, thanks for sharing Rob. What are you doing with it from there? I'm still trying to follow the reason to do this compared to the RTO.

@@TimWilborne We're feeding a continuous process and need to keep track of running time as well as down time or 'time between jobs' so we can properly put a 'gap' between jobs. For 14 years I've been working with a Micrologix 1400 and actually did the number-of-seconds-since 1-1-2000 on that processor due to the limits of timers on that platform. Now that I know a TON can handle a preset of over 49 days I'll probably work with that on the Micro820.

You don't need to change the path, you simply need to stagger your messages. Check out this video on cascading timers to give you some ideas. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xcLdacN3SZs.html

@@TimWilborne Lets say I wanted to talk to 20+ devices, are you suggesting 20 staggared messages to these 20 IPs?

@@Findley_Tyler Yes

@@TimWilborne Just curious if you have ever tried to manipulate the Tag with the IP Address on each scan by changing the 4th Octet with a micro 820 to have more than 16 modbus connections?

You might be able to but you are making life difficult on yourself. If you do that, you'll have to manage all the error IDs to troubleshoot the system. If you stagger the MSG instruction, when one isn't working, then you'll just have to lookup the error ID. What are you hoping to gain?

You could create a dint data type and have 32 bits in it to address individually and use the same mov instruction. But why not configure your buttons on your HMI for momentary operation?

Tim Wilborne I plan on using the micro 820 with the remote lcd for other purposes (cheap means to adjust timer parameters, and product type without online edits through CCW). I’m not sure on how flexible/user friendly the unit is in terms of creating basic HMI inputs functionality (start/stop functionality, alarm acknowledge). Furthermore my client wants to keep the HMI logic/alarming programmed within the PLC (that’s how it’s done for other PLCs on-site).

No, the EDS file is just so your PC can communicate with it. Check your path, it is the most likely problem. Also look up the error code you are getting.

Thanks for the answer, the error in the instruction is errorid 224 suberrorid 5, I talked to people at rockwell and they don't know how to solve the problem

@@nicolastoro6826 That usually had to do with the instance or object. Check your tag and data type

ok, I solved it, in the route, in addition to 4,192.168.X.X, it is necessary to add the rack number and the destination slot, therefore it remains something like 4,192.168.X.X,1,0 in my case, all this because the PLC controllogix it is very old.

Many of them are Modbus, here is a playlist on that. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qcF4m7rPjkw.html

I'm running a training class this week. I would post your question at PLCs.net

Thank you

What error code are you getting?

@@TimWilborne Error id 33 Sub error id 48