BobB

The E10 appears in my list. When you select CP1E it defaults to E20 - roll up the selection box and you should find it.

Cannot help you there. I did not write the protocol macro. I guess when sending to a slave look for a response back and if you do not get one flag it. I am no good at writing macros.

SCU card for mine.

Here is some sample PLC code for reading from three different register areas in a Caterpillar engine. You can also include error bits and the like if you wish. Please read the manual that comes with the file. Untitled.cxp

There are instructions on how to set up the code in the PLC - you just download the CX-Protocol file to the serial card - everything is done in the PLC.

Yes - I use a counter that is triggered by the busy flag to go onto the next read or write. Sometimes even the reads are sprayed all over the place and if you try to read too many registers there is something in the slave that stops the process. Also many slave devices have a limit as to how many registers can be read. Woodward controllers used to have a 30 word limit - now 100 - much better. Black Magic is comms mate! LOL

Look up a manual for the PLC you require - they are all different.  Basic memory areas are the same though.

If you have a look in the download section the source code is there - pull it apart.

For Citect SCADA use the OMFINS driver included with Citect. Make sure it is the latest driver. Details for setting up come with the driver. Here is a link for Protocol Macro code for Modbus RTU. http://forums.mrplc.com/index.php?/files/file/259-modbus-protocol-macro/

PITA but sometimes has to be done - I had to do it after a Sysmac Studio update crapped itself. Feel your pain.

It is an electrically erasable PROM - the program is written to battery backed RAM and then can be written to the EEPROM for backup purposes only. Read the manual.

Dound the problem - blown up input card - very rare.

Have a CJ1M PLC with 64 bit input cards. The inputs are all flashing - cannot find anything in the manual yet. Any thoughts?

In CX-Programmer open options - PLCs and tick the box to let you know there are forced bits on when exiting - then you will not forget.

Thanks Michael - just back last night from a hard week programming a pile of tricky stuff for NASA - all online - live site. We have to deal with a site wide UPS, rotary converter, mains and 8 generators and not turn the radio telescopes off. Challenging sometimes. There is no N+1 for the UPSs so if something goes wrong with one or more of them we start generators and co-generate with the UPS - or rotary converter if it is in action. I was very mentally tired - 9 hours a day for 4 days - Friday was good they were testing what I programmed. No blackouts and worked perfectly thankfully.

Hangover from older PLCs where symbol inline instructions were not available.

Copy from the I/O table - Ctrl C - Ctrl V into excel. The I/O number column will need to be formatted to number. Then just copy oiut of Excel into your symbol table. No need for import and export.

You could possibly set up dual Device Net masters through a Red Lion protocol converter - I set up dual Modbus TCP masters a few years ago.

Have looked right through the manual and cannot find anything. Finish up with a scrolling line. Ideally I would like to have an alarm page and alarm history page like the one in the NS screens. Any thoughts please?

DBLL is 32 bit to 64 bit float - DBL is 16 bit to 64 bit float.

No. That is why there is a CPU backplane.

Monitor mode allows online program changes - run does not. I start all mine in monitor mode anyway.

Is anyone having issues with the latest version of Sysmac Studio (1.24)? Updated today and it will not load.

That is why the suggestion to do it on 1st at 00:00:00 - does not matter how many days then.

Yes - just the update program. Still not working - have to reinstall I guess.