Internet PLC Forum

thanks for that
... I find it odd that it is varying so much,..

You can try to increase the frequency of the PWM output  to reduce the variation of the output.

Also why does the PWM 1 output continue with start contact open, I need to hit reset to turn it off.

SETPWM command is a "set and forget" function. Once it is run the output will continue to operate at the duty cycle and frequency by the CPU hardware. In order to turn off the PWM output you must run another SETPWM command again to set the duty cycle to 0%.

Try to restart the i-TRiLOGI program and connect to the PLC again and go online monitoring. The message should disappear.

If this still doesn't fix the issue then try to re-start the Nano-10 and it should go away.

Did you set a breakpoint at the location you indicated in the comment? Or do you mean that you have encountered a runtime error that point to this location?

If you have intentionally set a breakpoint at your statement DM[12]=6399 then what are you trying to examine? You can view the value in the variable DM[11] executed in the prior statement to ensure that it has been assigned the correct value. I see that you wanted to assign it 32808, however, since all DM[] are 16-bit signed integers the numbers that it can contain range from -32768 to 32767. It won't be able to contain the value 32808.  It will instead overflow and becomes number -32728.

You can examine the value in DM[11] by hovering your mouse over it and it will display its value as shown in the picture below. Or you can use "On-line Monitoring" -> View Variable screen and scroll to the second screen where all the DMs are displayed to examine the value of DM[11].

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If you have unintentionally set a break point there (it will be highlighted by a blue box around the statement) then you can remove the break point by clicking on the "Set Brk Pt" button to toggle it off as shown in the picture below. If you have uploaded the breakpoint to the PLC while doing online monitoring the PLC will stop execution at this statement and pause for your further action.

Alternatively you can also remove all break points from the "Edit-> Clear All Breakpoints" menu.

How do you access the PLC data from Excel?

Could it because the web query that worked with Nano-10 was written for the IP address of Nano-10 but not Wx100? You may need to re-define the Excel query:

If you add a new query on the Excel spreadsheet cell by specifying the IP address of Wx100 and the query string, did you get the response data string correctly (see below)?

We tested that on Excel 2016 and it is able to obtain the correct response string from Wx100.


 

Sorry for the confusion as the forum reformatted the code section because I forgot to enclose the section with the code markup - this has now been fixed.

I have attached the PC7 program file for demonstration. You should observe DM[1] to DM[20] contains the ASCII value of each byte in the string A$ = "OPEN EMERG STOP SW"  The screen capture below shows these byte values in HEX mode.

There is no direct mapping of string variables to Modbus space.

So if you need to read those data, then your program can break up the strings into individual bytes and store them inside the DM space so that they become accessible via Modbus command.
A$ = "This is a TEST 1234"

J = LEN(A$)

FOR I = 1 to J
    DM[I] = ASC(A$,I)
NEXT

When you run the above fragment the byte data of each character inside A$ will be stored from DM[1] to DM[J] where J = length of A$

We have sent you the firmware upgrader and latest i-TRiLOGI software download links. I believe the new firmware and software has resolved your reported issues.