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21
Technical support / Re: FMD MODBUS Long delay answering
« Last post by acxysty on December 03, 2024, 07:22:37 AM »
We tested the setsystem 3, 0 and we still have a long delay before the FMS replies, around close to 35 ms.

The image shows 3 queries on 3 differents slaves : The 1st and 2nd queires give immediate answer while the FMD need close to 35 ms.
Any idea wyhy ?

Regards
Thierry
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Technical support / Re: FMD MODBUS Long delay answering
« Last post by acxysty on December 02, 2024, 07:24:37 AM »
Thnzk you for your help.
Yes we are using MODBUS RTU / RS485.
We will test the SETSYSTEM(3,0) instruction.
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Technical support / Re: PMW outputs
« Last post by support on December 02, 2024, 12:57:25 AM »
It wasn't very clear what you meant by "no longer operate correctly"?  Do you have an oscilloscope to check the output waveform for frequency and duty cycle?

Note that if you are driving the input transmitter of a solid state relay, then check that the anode of the SSR is connected to the +24VDC of the PLC's power supply and the cathode is connected to the FMD PLC's digital output.

Is the SSR driving a DC load up to 100A? Please ensure that the correct type of SSR is being used.

The FMD PLC can operate a wide range of PWM waveform frequency. The T100MD is a very old PLC that only supports a handful of PWM output frequency (16, 32, 63, 250, 500, 2000,
8000 and  32000 Hz) and it will always fall only into one of the available frequencies. You may want to specify the same frequency of what is available on the T100MD when testing with FMD PLC if you expect similar behavior.
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Technical support / PMW outputs
« Last post by Hminx on December 02, 2024, 12:36:42 AM »
Hi All

I recently prototyped a project using PWM outputs on a T100MD 888  to operate two actuator solenoids on a truck gearbox, this works fine but when I replaced the T100 with an FMD88-10 The PWM outputs would no longer operate correctly. The outputs control two 100amp solid state relays so they aren't overloaded,  I tried another FMD88 with the same result.

Cheers Pete



























25
Technical support / Re: FMD MODBUS Long delay answering
« Last post by support on November 30, 2024, 07:30:37 PM »
Are you communicating with the FMD PLC via RS485?

You can try the SETSYSTEM 3, 0 command as described in the following document:

https://triplc.com/TRiLOGI/Help/tbasic/setsystem.htm
26
Technical support / FMD MODBUS Long delay answering
« Last post by acxysty on November 30, 2024, 01:51:55 AM »
Dear Tri_PLC
Doing some measurement with a scope we notice that the delay betwteen the request adress to the FMS and its answer is around 40 ms as it can be seen on the joined pic.
This capture show 3 requests adressed to 3 slaves, the FMD being the last one. The 2 first send answer within a few ms while FMD replies in 40 ms.
Any explanation or suggestion to reduce this delay that is well over the MODBUS protocole definition !
Thank you for your help.
Thierry
27
General Discussions / Re: RECIPES
« Last post by ROBBYG43 on July 10, 2024, 03:23:11 PM »
Thank you very much for your advice, I will be trying it.
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Technical support / Re: PWM issues
« Last post by support on July 06, 2024, 09:41:56 PM »
Is your custom function that run the first PWM running in a loop until the action is completed? If so that is the reason why the second PWM does not run until the program exits the first custom function.

You have to structure your program such that if you need to run two SETPWM on two separate PWM channels they should be run consecutively.  They could be in different custom function but your program must allow the custom function to exit and then return back on another scan.
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Technical support / Re: PWM issues
« Last post by Hminx on July 06, 2024, 12:53:06 AM »
Thanks Support    That helped
Next issue is that I'm trying to run two PMW outputs concurrently controlled by two different custom functions the problem being that i cant get the two output s to operate at the same time, the second  out put wont operate until the first has completed its pulse train  [ can combine both outputs into one custom function but this becomes a bit clumsy and difficult to adjust

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General Discussions / Re: RECIPES
« Last post by BetterBath on June 28, 2024, 03:47:22 AM »
Hello! Yes, you can enter a data table as recipes in the Wx_100 without the client needing access to the TL75 software.
1.Prepare the Data Table: Create your recipe data table in CSV or Excel format.
2.Convert Data: Use a compatible intermediary software or script to format the data correctly for Wx_100.
3.Upload: Access the Wx_100 interface to upload the converted data table directly.
4.Verify: Check the uploaded data in Wx_100 to ensure accuracy.
Consult the Wx_100 documentation or technical support for any specific requirements or issues.
junk haulers
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