CX Programmer 9.61

[504bloke 1]

Never having used Omron before and having to fault find a system with no help from the Italian machine manufacturer I could do with a bit of help

The NT21 screen is locked on a fault screen - (in Italian) and I have by downloading the HMI software with NT Support tool managed to work out that the screen is being called by the PLC register 3504

Attached - or I would but nothing I attach works - says problem contact site admin

In the PLC the only reference to 3504 I can find is 35.04 in a KEEP(11) block ( a set/reset ??)

Now the IO of the PLC is in the form of 21.06 21.07 19.05 etc in the ladder logic - how is this related to the mapping of the IO for the slots ?

I did look in the old manual but it doesnt refer to 21.06 it refers to 0000 0010 etc for the logic addresses so I am a bit lost 

And cant upload photos.......

[IO_Rack 161]

I'm sure I follow what you are asking but it seems that you want to know how the screen is switched. Is this correct?

Look at the NT21 project or system setup screens and look for PT Control WORD. This WORD will be the read and write for the screen number. 

[504bloke 1]

Thanks, Just firing up the old laptop to have a look in NT Support

 

[504bloke 1]

Ok Have found the registers 

I have 

PT Control Area PLC Address D00000

PT Notify Area PLC Address D00020

Window Control Area PLC Address D00040

I am trying to find in the PLC what fires the screen that is triggered by 3504

 

Edited 10 March by 504bloke

[504bloke 1]

Just to add - in the NT21 if I go to the screen thats being fired its listed function is this

History (ticked)

Switch Screen(ticked)

Screen No = 18

String Table Entry = 3

PLC Address = 0003504

 

[BobB 56]

I have not seen one of these for many a long year - thought they had all died. Memory is fading. Somewhere in the software there should be a MOV function I think to move the screen page number into the notify area then the screen will change to that page. Hope this helps. As the PT Control Area is D0000 do a search for that address - it should appear multiple times to change the page on the screen.

Edited 11 March by BobB

[504bloke 1]

@BobB is the PT the screen window control area D00000 then ? I was assuming it was the window control area D00040

I can find D00000 quite a few times in the plc program - with the mov instruction - yet there is no move 3504 (dec) or DBA (Hex) to this area

Its a shame I can post pictures - always used to be able to I think @BobLfoot

 

[504bloke 1]

Section5 at rung 44 (6, 2) Step 763 : MOV(21) #27 DM0, Operand 2 :DM0
Section5 at rung 45 (6, 2) Step 766 : MOV(21) #127 DM0, Operand 2 :DM0
Section5 at rung 46 (6, 2) Step 769 : MOV(21) #227 DM0, Operand 2 :DM0
Section5 at rung 48 (6, 2) Step 776 : MOV(21) #28 DM0, Operand 2 :DM0
Section5 at rung 49 (6, 2) Step 779 : MOV(21) #128 DM0, Operand 2 :DM0
Section5 at rung 50 (6, 2) Step 782 : MOV(21) #228 DM0, Operand 2 :DM0
Section5 at rung 52 (6, 2) Step 790 : MOV(21) #29 DM0, Operand 2 :DM0
Section5 at rung 53 (6, 2) Step 793 : MOV(21) #129 DM0, Operand 2 :DM0
Section5 at rung 54 (6, 2) Step 796 : MOV(21) #229 DM0, Operand 2 :DM0

I have the following move commands to DM0 - and I tried to insert this after the text but it wont have any of it 

So above wether dec or hex none of these relate to in the NT Screen/Software

In Table > Bit Memory Table (I think this is the right place) I Have

No3. Alarm Str:0003 Hist:On Scr:0018 (this is the screen thats showing on the machine/fault screen and cant get out of it) PLC Address:0003504 IO Comment:PINCERS BLOCKED (But they aren't) Ref:No

Looking at the help the fact we have # before the source word means its a number and nothing else - so how do we get from any of those to 3504

 

 

 

 

 

 

 

[504bloke 1]

Ok, think I have worked it out - Move #18 to DM0 is screen 18 - not sure what the 3504 in the NT has got to do with it

There are 230 screens and some 70 moves to DM0 with numbers from 1-229 so thats seem right

The only thing I need to know now is how the IO (digital) addressing works for the PLC and Slots

Have many bits of logic with no comments 23.00 32.10 etc etc and unsure where the io starts and finishes

[BobB 56]

Proecssor and what is in slots. Varies with processor.

[504bloke 1]

CQM1H-CPU21 - Looks like CPU has 15 inputs

Then Next ID1 on drawings is 16 way input card

Then Next OD0 on drawings is 16 way output card

Then Next OD1 on drawings is another 16 way output card

The drawings are not correct as there are some other cards after this but not on drawings and I havent got a photo of the plc rack in the panel 

 

Edited 11 March by 504bloke

[504bloke 1]

Ok customer has just sent me a photo

PLC + Orange SLot (cant see ID from photo) - Its a 16 way dig input card so I would Guess ID212 and this looks like part of the processor so the following 3 extra cards are:

Orange Slot ID212

Yellow Slot OD 212

Yellow Slot OD212

 

[BobB 56]

Inputs start at channel 0 - outputs start at channel 100 for that PLC. So inputs will be channels 0 & 1 - outputs will be channels 100 & 101. Inputs are orange and outputs are yellow - standard with Omron. Inputs are ID - outputs are OD. Hope that helps you sort out your issues. Yes - the first input card is part of the processor. That PLC was discontinued many years ago by the way.

[504bloke 1]

@BobB thankyou

I know - its very old, they brought the machine (packing) second hand from an auction site, working, needless to say it doesnt work, I have told them its obsolete and they would be better off fitting a new PLC & HMI but they havent a budget for that....... Ill let you know how I get on

[BobB 56]

How did you go?

[504bloke 1]

@BobB Yes, thanks and worked out the IO addressing, found the areas needed to look at when on site with the fault active......

Then got covid......

So a few weeks delayed.......

Hope to take a look on site next week but away in Wales so may be the week after......

[BobB 56]

Oh bugger - not too bad I trust.