jschulze's latest activity

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    jschulze reacted to David_2's post in the thread SCADA color coding with Like Like.
    I need a PO to do that level of research.
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    jschulze replied to the thread Modbus for a Newby.
    According to that documentation, the Battery Capacity is a 16-bit integer, not a 32-bit floating point value. Therefore, your query...
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    jschulze reacted to David_2's post in the thread Modbus for a Newby with Like Like.
    The value is a 32 bit floating point (FP) value consisting of four 8 bit bytes. There are four IEEE754 word/byte order formats to...
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    jschulze replied to the thread Modbus for a Newby.
    The Modbus specification defines a register as a 16-bit value and specifies that each register must be encoded using...
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    jschulze replied to the thread RS485 connection delay.
    No, it is not expected for there to be that long of a delay for a RS-485 to Ethernet gateway. There is likely a configuration setting...
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    Well, for what it's worth, it seems you're not the first to have a problem like this...
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    Modbus/TCP doesn't have a slave ID. Only serial line Modbus has a slave ID. There is a Unit ID field in Modbus/TCP, but this is not...
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    jschulze replied to the thread Modbus for a Newby.
    Many Opto 22 products support Modbus RTU natively or with an integration kit. Have a look here...
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    jschulze replied to the thread Modbus for a Newby.
    I think your general idea is correct. There are a few corrections and suggestions I can make, though. Since you're using Modbus RTU...
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    jschulze replied to the thread Modbus RTU Error.
    I'm sorry, but I am not going to decode this for you. I will say, though, that not all of the packets you show are even valid Modbus...
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    jschulze replied to the thread Modbus RTU Error.
    Judging by the packets shown in this capture, the RX packets are requests and the TX packets are responses. The device that the RX and...
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    jschulze replied to the thread Modbus RTU Error.
    The bytes you've shown correspond to a request packet, not a response. It's a request to device 12 to read 10 Holding Registers starting...
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    Many of our (ICC) gateways support a Modbus RTU Sniffer driver that allows passively listening in on the Modbus communication between a...
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    jschulze replied to the thread Modbus RTU Error.
    To actually calculate the CRC (for verification, etc.), you can use an online CRC calculator such as this...
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    I recommend first following the instructions in the WP8025ADAM manual for using Wellpro's PC debugging tool to confirm operation between...
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