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I have a couple of them. Not sure of the status. I will have to check to see exactly what I have. Let me know if you are interested. I bought them a long time ago and never got them to work the way I needed them too. So we never used them. I will get the part numbers and revision information.

Sounds like an application issue. If the motor is being pushed while still energized it will generate electricity. This will raise the DC bus voltage and cause the drive to trip to protect itself. I only know of two solutions: - Get rid of the regenerative condition (fix the check valve) - add DC Bus regenerative braking (ie. resistor bank) Or replace the drive with a regenerative drive

You are pushing down on the mouse wheel. Just push down on the wheel again to turn off scroll mode. This is a mouse feature not the PLC software

This is a great question. I have the same issue. With reduced staff and more work, things like keeping track of software and firmware revisions are low on the list. I use a spreadsheet but there definitely needs to be a better way. I hope someone out there has a solution they are willing to share.

I had twenty of these at my facility and had to replace all. They had a high failure rate, but the scariest part is that when they failed they would just stop executing the program and the outputs would freeze. This is not a good scenerio for safety reasons. The L30 is a poor product. Rockwell ended up replacing all of them at their cost. If this is controlling real world equipment, I would highly recommend replacing the L30 with the L31 or newer. I believe your version of the software supports the L31.

I have the same problem. A new install on two Windows 2008 servers. Can not even launch the RSLinx window. Can't stop the service through the RSLinx service control panel. We have to stop the service through the Control panel & Services. Then we can open the RSLinx window to configure it. Have not had a chance to call tech support yet.

The 2711 uses PanelBuilder32 (software part# 2711-ND3).

I forgot...you also need a processor or Adapter module to complete the feedback.

PLC5 power supplies must be plugged into the rack. There is a feed back connection on the rack to enable the power supply.

Without knowledge of the robotics and no prints.... 28 is bit 3, 4 & 5. (16+8+4). I would check the individual inputs on the GI side. For some reason all three of those inputs maybe getting turned on (instead of just the two that you want). You may have a wiring issue or leakage current and need dropping resistors.

The number one recommendation for all DH+ issues is to very that the installation is done correctly. 90% of the time it is an installation issue. Follow Allen Bradely's specifications.

Someone correct me if I am wrong, but I don't believe passthru will work through an ethernet bridge. You have to be directly on the Datahiway. I believe it has something to do with the df1 protocol not supported over ethernet. I never understood it. Why can I program the PLC and not use pass thru??? If anyone has figured it out, I would certainly like to know.

The L30 is a discontinued product. I have been replacing them with the L31. I believe v13 is the last release for L30.

We purchased the upgrade for DOS loader several years ago. DOS loader does not work reliably online with Windows XP. The upgrade is called 620Win Loader. We got cables with Honeywell PC card. I have never made up a cable, because the cable has a power supply/RS485 converter built into it. It is simplier to purchase and get it right the first time. I believe you can still get the cable from Honeywell.

V=IR 10Volts = 20ma times 500 ohms so a 500 ohm resistor will give you 2 - 10 volts

I had a situation once where the processor would fault and lose its memory every time we did an online change (PLC5-40B). We found it to be the unterminated end of a DH+ blue hose touching the inside of a cabinet.

I have had similar problems. We did everything you did, replaced Sola transformer, power supply & cable, processor, chassis and even ran a new ground & power source. Finally we replaced the 1771-P7 power supply with a 1771-P4S slot power supply. I don't know why it fixed it, but it did. I have also seen a data hiway connection touching the cabinet and causing the processor memory to scramble while we were doing on line edits.

S1:0 Year S1:1 Month S1:2 Day S1:3 Hour S1:4 Minute S1:5 Second We use the S1:5/0 & 1 bit all the time for a 2 second and a 4 second flasher. Also use it to space out messaging. I have never written to these locations, but I don't see why you couldn't. (Careful, I don't know what would happen if you wrote an invalid value, like 100 to S1:5)

From someone that still has 5 - PLC3/10s & 1 - PLC3, all with hot backup. S1:0 Year S1:1 Month S1:2 Day S1:3 Hour S1:4 Minute S1:5 Second

That would mean that a 40HZ reference will tell the motor to run at 1200RPM, even though the output frequency of the drive may be up to 41.38HZ (depending on load).

I:2.8/2 ==> 8 times 16 plus 2 is 130 Go to View/Properties Click on the Address Display tab Under I/O Bit Display Mode, select Slot.Word/Bit Click Apply You should be all set

With the program opened as a window, drag the corners to make the size maximum. Then close and reopen. It should open as a window and remember the last size you had. Works the same for RSLogix5.

I found a manual. The 1784-U2DHP has the 8-pin round connector that plugs into the front of a PLC. 1784-U2DHP Manual

Also, make sure that RSLinx is not running. Exit and shutdown RSLinx.

Yes 4 connections, but isn't it also 3 read max and 3 write max. Some devices use two connections (one in and one outgoing). Also, noticed that an unused connection may not be released when you are done with it.