Bill Wiewandt

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About Bill Wiewandt

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  1. Learning about MicroLogix 1500

    Hi Triplett,  Do you have an end cap attached? These don't come with the controllers and need to be ordered separately. Order cat # 1769-ECR unless you are using a second bank of I/O, then you will need the 1769-ECL.  Also, if you toggle the mode switch, can you clear the flashing red fault LED? In other words, is the fault condition presented upon going to RUN mode? Have you verified the installation using a (free) tool such as IAB?     - download here -> https://www.rockwellautomation.com/en_NA/support/product-selection-configuration/overview.page?pagetitle=Control-Systems-Configuration-Tools&docid=01503dfdb8a20bf09c86944a6f44364b Concerning RSLinx and Windows 10 support, yes, I would update to the latest version (ver 4.11). Looks like version 3.90 is the first with Windows 10 support.   - link to release note - https://compatibility.rockwellautomation.com/GeneratedReleaseNote.aspx?v1=55894&v2=55894&o=&pdf=0 Continue to use RSLinx Classic, do not try to use FactoryTalk Linx (this is for CIP only). You mention that you have serial cables for both 9 pin and 8 pin, be sure you are using:   - for 9-pin D-shell - a null modem cable such as 1747-CP3 or 1756-CP3 (with 1764-LRP processor unit)   - for 8-pin mini-DIN - a 1761-CBL-PM02 (to comms port on base unit). If possible, confirm that these cables work with another controller to verify their operation. Finally, don't forget about the RA Knowledge Base. Even if you do not have a Tech Connect support contract there are lot's of helpful documents there.    - link -->  https://rockwellautomation.custhelp.com/ Regards, Bill Wiewandt
  2. PLC-5/40L change to 5/80B

    I swapped the PLC 5/80B series D with a PLC 5/80B series E using the same 1785-ENET and all is well. The scan time is right around 30ms. Still not sure if it was the processor or just the series of the processor. I'm not sure if I am remembering this correctly or not but it seems to me that a certain vintage of 5/80's were slower than previous versions. Later versions were then improved to be faster once again. Also, as Ken Roach stated, I believe the 5/40's were generally considered the fastest in the family.
  3. Check with your local A-B Distributor to confirm the amount of the return credit but it looks like replacement of a 5/04 with a 5/05 may be elgible. This is part of the StepForward program. Use this link for more info. http://www.ab.com/stepforward/
  4. Contrologix to PLC-5 comms

    Ken, Yes, the message is fragmented then re-assembled at the target.
  5. PatB63, A DHRIO channel, when configured for Remote I/O, can communicate with up to 32 unique rack numbers and have a maximum of 32 physical devices connected to it. What this means is if you have 32 devices that all use 1 FULL rack (8 module groups) or less, then you can comm with all 32 remote racks. But, if you have 16 physical racks that all take up 2 logical racks each (16 slot racks addressed as 1-slot addressing for instance), then you will only be able to connect to 16 physical racks as you have met the maximum number of 32 logical racks. Hope this makes sense. Here are some other points to ponder. You can keep the 1771 and 1746 by removing the processors and replacing with adapters. A-B has several I/O networks available. Ethernet - Excellent choice except there are NO Ethernet adapters to put into 1771 or 1746 racks. This is not a supported option. ControlNet - Another excellent choice but this one carries a bit more baggage than Ethernet (need to schedule using RSNetWorx for instance). You can use a 1771-ACN®15 in the 1771 racks but you cannot control 1746 SLC I/O on ControlNet with a ControlLogix controller. This is not a supported option. DeviceNet - You could use 1771-SDN and 1747-SDN but these require you to still keep the existing processors. Probably not a good choice. Universal Remote I/O - This option replaces the controllers with ASB adapters. This provides the best bang for the buck IMHO but you will be using older technology (RIO can be very solid network however.). Be sure to check whether all your SLC modules can be used in remote racks however. In this scenario, you add a 1756 rack with a processor (1756-L6x), a 1756-EnxT Ethernet bridge (for corp LAN), a 1756-DHRIO (or 2 if needed) to communicate with Remote I/O. Finally, you could do some sort of a mixed network such as using ControlNet to control the 1771 I/O then bridge to the SLC over RIO using the DHRIO module but this may be more confusing than its worth. \
  6. BobLFoot, Excellent post. I should have been concentrating more on the main question at hand rather than just a small detail. I may be new to this forum but I don't think I could have said it better myself. "Keep the main thing the main thing"...
  7. The free offering is RSLogix Micro Starter Lite (v8.10). This package supports the ML1000 10-point & ALL ML1100. It is available for download here --> http://www.ab.com/programmablecontrol/plc/.../downloads.html
  8. The SLC5/04 does not have an Ethernet port like the 5/05. I personally don't recommend using messaging for I/O but it all depends on what your application can tolerate, I guess.