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MW_LSI

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MW_LSI


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RE: 5069-serial receiving long strings

Posted By MW_LSI Jan 09, 2026 08:49:01 PM
Found In Egroup: Automation Control \ view thread
I am running this serial line full duplex (which is why I'm using this module since the 1734 one doesn't have RTS and CTS and the customer device does use those lines). Assuming that the .RxID output tag on the 5069-SERIAL is analogous to the .NextTransmitRecordNumber output tag on the 1734-232ASC this ...

5069-serial receiving long strings

Posted By MW_LSI Jan 07, 2026 10:33:00 AM
Found In Egroup: Automation Control \ view thread
My first time using the 5069-serial module and I'm looking for some guidance on how to receive/process a long (~5k byte) string in generic ascii mode (RS232 full duplex). I don't have hardware to test with at this time - I won't get my hands on that until final implementation. The string will be sent ...

RE: PanelView 800 will not validate

Posted By MW_LSI Feb 27, 2025 06:09:00 PM
Found In Egroup: Automation Control \ view thread
Has anyone tried this to see if it fixes the Logix Designer issues as well? ------------------------------ Thanks, Mark Will ------------------------------

Micro870 Modbus RTU Master Latency

Posted By MW_LSI Sep 23, 2024 09:21:00 PM
Found In Egroup: Automation Control \ view thread
I'm using a 24-point Micro870 as a Modbus RTU master and trying to track down the latency in the system. I'm sending pretty short messages (~20 bytes including the header) and my PLC scan time is right around 5ms. Based simply on transmission time, a single message (including response) should be <2ms, ...

RE: CCW Micro820 to ATV12 VFD Modbus

Posted By MW_LSI Jun 30, 2023 07:55:00 PM
Found In Egroup: Automation Control \ view thread
Glad I could help. ------------------------------ Thanks, Mark Will ------------------------------

RE: CCW Micro820 to ATV12 VFD Modbus

Posted By MW_LSI Jun 29, 2023 03:33:00 PM
Found In Egroup: Automation Control \ view thread
If you're using the UDFB, you just need to set the drive node number, Channel (2 for the embedded serial), set drive powered to TRUE (we used this to prevent comms from occurring when the drive was e-stopped by dropping the mains power). The UDFB will handle getting the drive into the ready state automatically. ...

RE: CCW Micro820 to ATV12 VFD Modbus

Posted By MW_LSI Jun 29, 2023 02:48:00 PM
Found In Egroup: Automation Control \ view thread
It's not that straightforward - that drives uses the IEC 61800-7 state model so there's a sequence you need to go through to get it into a state that's ready to run. The UDFB handles this in lines 113-127 - bits 0-3 step through the state model and you will end up with all 4 of them set when you get ...

RE: CCW Micro820 to ATV12 VFD Modbus

Posted By MW_LSI Jun 29, 2023 09:23:16 AM
Found In Library: Automation Control

RE: CCW Micro820 to ATV12 VFD Modbus

Posted By MW_LSI Jun 29, 2023 09:23:00 AM
Found In Egroup: Automation Control \ view thread
The UDFB was from version 21.01 so if you're using an older version it may not import correctly. It was originally written in version 12 (attached) so you should be able to open it if you're using something newer than that. As far as termination resistors, you can probably get away without one if ...

RE: CCW Micro820 to ATV12 VFD Modbus

Posted By MW_LSI Jun 28, 2023 05:46:00 PM
Found In Egroup: Automation Control \ view thread
On one of our older product lines we did this all the time (on a Micro850 rather than 820, but the logic should be identical). We connected a 1761-NC01 to the embedded serial port and wired the drive into that (jump terminal A to TERM, wires on A & B to pins 4 & 5 on the RJ45 at the drive). I've attached ...

RE: CCW Micro820 to ATV12 VFD Modbus

Posted By MW_LSI Jun 28, 2023 05:45:31 PM
Found In Library: Automation Control

RE: Micro800E implicit messaging

Posted By MW_LSI Jun 27, 2023 10:06:00 AM
Found In Egroup: Automation Control \ view thread
Based on conversations with Tech support, there is currently no way to determine the status of an implicit connection in version 21 or 21.01 (it's displayed on the Ethernet - Modules screen if you are connected to the controller but not accessible from the program). I'm told there is a plan to get this ...

RE: Micro800E implicit messaging

Posted By MW_LSI Jun 22, 2023 10:11:00 AM
Found In Egroup: Automation Control \ view thread
Thanks for the answers all. Technical support has confirmed that the default behavior in version 21.01 is not to fault the processor on a connection loss. I'm wondering if there's a way to get the connection status with a CIP_GENERIC message from either class 5 (Connection Class) or Class 6 (Connection ...

RE: Choosing the correct PLC CompactLogix or Micro800's

Posted By MW_LSI Jun 14, 2023 01:09:00 PM
Found In Egroup: Automation Control \ view thread
As someone who uses both Logix (mostly Compact) and Micro800s extensively, here's our thought process on selecting which one to use: Does the customer spec require a Logix controller or a safety PLC? If so, use the Logix controller. Does the application require 2 distinct IP addresses? If so, ...

RE: Supporting Micro800 runtime variants

Posted By MW_LSI Jun 14, 2023 12:50:00 PM
Found In Egroup: Automation Control \ view thread
Joe, Unfortunately the serial module is one of the few that you can't make optional (we have a similar situation with analog modules (2080-IF2) and those you can make optional so the controller will run whether it's there or not). I don't know of any way to build projects via command line or ...

Micro800E implicit messaging

Posted By MW_LSI Jun 14, 2023 12:36:00 PM
Found In Egroup: Automation Control \ view thread
I'm hoping someone on this channel has some experience with implicit messaging on the Micro850E/Micro870E. I don't have a controller to test with right now and the documentation is really thin when it comes to what happens if thing don't quite work as expected. I've tried calling support but they basically ...

RE: Micro830 Ethernet/IP Communications

Posted By MW_LSI Aug 23, 2022 05:17:00 AM
Found In Egroup: Automation Control \ view thread
There isn't a real clean way to add Ethernet to a Micro830. If this is a new project or swapping out the controller is an option, use a Micro850 - it's the same footprint and I/O layout but has Ethernet built in. This would be your cleanest option. You can just change the controller in CCW and you should ...

RE: Can a 1769-ASCII Module be used for Modbus RTU?

Posted By MW_LSI Feb 16, 2022 05:34:00 AM
Found In Egroup: Automation Control \ view thread
You could try the Prosoft PLX31-EIP-MBS modules - we just ordered a few and they were in stock. I think they're replacing the MVI69 modules in the near future if they haven't already. ------------------------------ Mark Will ------------------------------

RE: Micro850 Structured Text File operations to/from SD card

Posted By MW_LSI Dec 20, 2021 02:42:00 PM
Found In Egroup: Automation Control \ view thread
It does not - RTC, memory backup/restore, uSD are all available only through plugin modules. ------------------------------ Mark Will ------------------------------

RE: Micro850 Structured Text File operations to/from SD card

Posted By MW_LSI Dec 18, 2021 07:17:00 AM
Found In Egroup: Automation Control \ view thread
As far as I know there's no way to do any of that on a Micro850. The Compactlogix controllers can do so but the process is a bit convoluted (there is some sample code for this). ------------------------------ Mark Will Director of Product Development ID Technology ---------------------------- ...