MP8000 PROGRAMMING GUIDE
■This guide is addressed to systems integrators who will be developing software for a master device to communicate with the Model MP8000 product. The software developer is expected to have reasonable working knowledge (example: understanding what uint16_t Base 10.xx means) for writing programs. This document also describes the EtherNet/IP features supported by the MP8000. The MP8000 supports Explicit I/O messaging as defined by the ODVA EtherNet/IP Specification.
■NOTE: Littelfuse has developed a PC based program called MP8000 Software. It is available for free and should work for most applications.
■The master device would typically be a Programmable Logic Controller (PLC) or a Personal Computer (PC) that will communicate with one or more slave devices. A PLC normally would have the command protocols built into it, so the programmer would not have to develop them. If programming a Personal Computer, these would have to be developed or find a library online that supports MODBUS TCP or Ethernet/IP.
■If programming a PC, it may be worth noting that it is the responsibility of the master controller to initiate communication. In other words, the master controller must be programmed to periodically poll the slave devices and initiate a request for data or to issue a command to the Model MP8000 to stop or reset the Model MP8000’s control relay. When the Model MP8000 responds with the requested data or confirmation of the stop command, it is the responsibility of the master controller to determine if the information arrived correctly with no communication errors. If there are communication errors or if there is a time-out waiting for a response, it is the responsibility of the master controller to reissue the command to the slave device. If the response arrives correctly, the master controller is then required to further process the data to put it in a form suitable for viewing by an operator.
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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052324 |
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REVISION 3-A-052324 |
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3.9 MB |
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