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    • M

      Read/Write Modbus

      • • MikeyH
      9
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      9
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      3.3k
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      M

      Hi Tomas,

      Thank you for your help. I understand how it works now, what you provided is where i wasn't sure what to do. It makes sense to me now.

      Cheers

      Mike

    • jaroslav_sobotaJ

      Serial ports on Wago PFC200

      • • jaroslav_sobota
      2
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      2
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      1.6k
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      R

      Hi Jaroslav,

      That explains why i could not find it. I will look into a TCP version or another PLC with more serial ports.

      Thanks,
      Richard

      PS
      I now have a slightly used 750-652 for sale 😉

    • M

      Modbus on TTL Advice

      • • MikeyH
      3
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      3
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      1.4k
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      M

      Hi Jaroslav,

      I will email you the documentation for the device.

      Cheers

      Mike

    • R

      Wago Modbus - Port name + Address > 65535

      wago modbus rtu • • rluteijn
      4
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      2.1k
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      jaroslav_sobotaJ

      Hi Richard,
      there are various "simplifications", using various offsets to distinguish between the four tables of data. For Holding registers, the most typical is offset of 40000, but as you already noticed, this is no standard.

      Best regards,
      Jaroslav

    • M

      Echo on RS485

      • • MikeyH
      14
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      Votes
      14
      Posts
      3.1k
      Views

      M

      Thank you Jaroslav, you learn something every day! That will help more than you know with all of my projects. especially ones with process models 🙂

      Cheers

      Mike

    • E

      Two Modbus instances on one controller solves device incompatibility!

      • • enovikoff
      2
      0
      Votes
      2
      Posts
      610
      Views

      jaroslav_sobotaJ

      Hello,
      thanks for sharing your experience and findings. There's nothing to add, only that from the nearest release the REXYGEN compiler will issue a warning when two drivers use the same configuration .rio file.

      Jaroslav

    • B

      Solved Reading and Writing 4 byte floating point from modbus

      • • brunofporto
      7
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      7
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      2.5k
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      B

      @reitinge Thank you very much! That is what I am doing right now 🙂 It works good enough.

    • A

      Modbus RTU multiple read

      modbus rtu passive • • Apollo
      8
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      1.6k
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      cechuratC

      @apollo I understand. Just keep in mind that the Passive feature is available both at Modbus RTU and Modbus TCP.

      Kind Regards,
      Tomas

    • M

      Strange Modbus Behavior

      modbus rtu diagnostics • • MikeyH
      6
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      1.2k
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      cechuratC

      @mikeyh Hi Mike,

      thanks for update. Could you please try to test one Raspberry Pi with certain SD card (i.e. OS) and check with working Monarco HAT and then switch the one failing so we can say it is Monarco HAT failure afterwards?

      Thanks for cooperation.

      Kind Regards,
      Tomas

    • R

      Solved Read and Write Modbus register on HMI

      • • RexPeter
      4
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      1.1k
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      R

      @rexpeter
      Hi Peter,
      no problem. I'm glad, it's works.

      Cheers,
      Jan

    • M

      Modbus RTU in REXLANG or Python

      • • MikeyH
      2
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      Votes
      2
      Posts
      732
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      J

      Hi Mike,

      I recommend checking out the examples in the 0401_Modbus_RTU folder or take a look at the 0121-10_Monarco_HAT_Modbus_RTU_ADAM-4024 and 0121-11_Monarco_HAT_Modbus_RTU_Loopback_USB examples. These are all provided in REXLANG. Hopefully, these examples will provide some assistance.

      Cheers,
      Jan

    • M

      MBM error

      • • MikeyH
      4
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      Votes
      4
      Posts
      52
      Views

      cechuratC

      @MikeyH Hi Mike,

      This is related to the communication timeout - inspect data length with respect to baudrate and timeouts.

      All REXYGEN error codes here in Docs: https://www.rexygen.com/doc/ENGLISH/MANUALS/BRef/BRef_ENGap3.html#x488-487000C

      Cheers,
      Tomas

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