Mendon Systems

If the CPU has a memory card and dip switch 2 is turned on, it will transfer the settings stored in the memory card at power up. Maybe that's what is happening??

CX-Programmer is part of the CX-One package which contains everything that you need for communication. You can read programs from a running PLC . You can make program changes online while the PLC is running. You must place the PLC in program mode to download a complete program which stops the PLC.

The @ symbol before a DM or EM address can also be used to specify a binary (decimal) indirect address. For example: If E0_1000 contains &25 then MOV #FF @E0_1000 moves FF hex into E0_1025.

The PLC and PC want to be in the same subnet, so you need to either change the PLC IP address to 1.144.97.xxx or change the PC to 192.168.250.xxx. It is possible to communicate between subnets using routing tables, but it generally is a lot more trouble than it is worth. Omron uses port 9600 for communication. The port number generally soes not have any effect unless you are going through a router.

What IP address is the notebook set to? It must be in the same subnet.

Don't forget to turn on the current/voltage switch for that input which is located behind the terminal block.

Your AD081 module should work fine. Just set one input up as 4-20ma current loop and connect the sensor according to the dwyer wiring diagram..

You cannot directly change that setting. Disconnect detection will automatically be turned on when any input is set to 1-5v/4-20ma and that input is set as used. If an entire module isn't working, then something else is wrong. Has the I/O setup actually been downloaded to the PLC?? If it was changed online, was the power or unit reset bit cycled?? Try connecting to your PLC with CX-P and open the I/0 table and Unit setup tab. Under "Options" select "Compare with PLC" to see if the PLC setup actually matches your program.

You can set each individual input to disconnect detection in the I/O table unit setup. You can test for disconnection by reading CIO word +9 (2009 for unit 0) bits 0-7. This only applies to I/O channels set to 1-5V/4-20ma. The documentation is in the W345 manual, section 3-6.

There is a function block posted here to do it. I haven't tried it.

I tried the CX-P version 9.6 simulator here with one of my CP1L programs and it worked fine, so I don't really have any idea what to tell you. I guess what you are doing is about the best idea until you can sort it out.

That's definitely kinda weird! The only thing I can think of is to check the PLC device type to make sure it is set to CP1L.

The bug has returned again. It only seems to effect the General Topics and Omron which have sub-forums.   Seems to be OK now.

Try using the @SET instruction. That will be a single program cycle SET.

Check to see if the same output is used elsewhere in your program. Also check to be sure that the rung is being processed.

Download the W368 manual from the Omron Europe website. It has all the information on analog I/O.

If your concern is really "how long will it last?" the answer is that almost any PLC will last longer than the development tools. I am still keeping two Windows 98 notebooks alive to support some PLCs that were developed using DOS based software. Those PLC's will outlast the notebooks!

Another thought ...... you have a CPU33 so it will have the EM0 memory area. If you aren't using that area for anything you could easily create a backup copy of the D32 register in an EM register (like E0_32). If you do that then you can create a rung which compares those two values and sets both registers to the largest value.

Open the memory view in CXP. Under the Online tab select Transfer From (or To) PLC.

Uploading a program change does not normally modify the DM memory area unless you specifically tell CXP to upload the DM Area.

The information you are looking for is in section 6 of the CP1L Operation Manual (W471). The analog value appears in A643 as a value from 0 to 255.

It seems strange that some of you are having this problem while others are having no problem at all. I just checked yesterday to make sure that my systems are all up to date and everything shows as current. I always do a download first then install the individual modules. Are those of you having problems doing the automatic install??

I have always thought that it should be called 'classic mode' and 'stupid mode'! Turning off 'smart mode' is one of the first things I do on an installation.

That will depend on what is connected to the power supply. If it is just being used as a 24vdc supply then any supply adequate current should work.

You need to add a relay contact closure interlock. Your drive should have provision for an external run enable contact. The contact closure needs to be energized by a PLC output.