PT internal memory

[maniniyot 0]

Hi guys

I have a NS12-TS200 programmable terminal , i only need to map the data so i can connect a SCADA system to the PLC

while mapping i encountered a device which is $W which is "internal memory of the PT" the manual also says that it cannot be read and written directly from host.

Ex: $W4195, 

because the $w device is only internal to the PT how or what settings do i have to check to find its equivalent device in the PLC? sorry i am not knowledgable in OMRON automation products

i also attached a screen shot of the display....

 

thanks

[IO_Rack 179]

$W memory does not (necessarily) have a PLC address equivalent. I can see that it is defined as ASCII for your Lot No..

Click on "Find" from the menu then click on "Address Cross Reference" to see if $W4195 is listed in a macro. It's possible that a macro is reading the information from the PLC, then formatting the string for the display.

[maniniyot 0]

thanks

but upon checking the device it seems that it does not have the macro that you are saying( as shown )

any other ideas?

[IO_Rack 179]

Did you perform the Address Cross Reference?

Macros can reside in more places. For example:  In the Screen Properties or PT > Project Properties.

 

[maniniyot 0]

Hey man 

I already found the MACRO that you are talking about

it means that its gonna read data from EMA_6195 to SW4195 in 125 points right?

[IO_Rack 179]

That's correct. Good work. The 125 points are in WORDS (16 Bit). If you are reading ASCII characters then each character is a BYTE (8 Bits).

[IO_Rack 179]

What is the model of the PLC you are connected to? I've never seen EMA memory. Anybody?

I saw another post of yours with the PLC model. I guess I've never used a PLC with so much EM memory. I understand now.

Edited 8 Jul 2016 by IO_Rack