Why Modbus Matters Now?

If you don't realize this, you can easily waste time looking in the datasheet for other possible registers to find, when you could have done it all along, and it's just the endianness that prevents you from getting a correct read. FYI, I just used a random set of 1s modbus over rs485 and 0s in the example above. To convert these into readings, you can use the "Programmer" setting on your calculator. Having a mix of devices on the same network can cause you problems if some devices use MSB and others use LSB. Some controllers even allow you to change the byte order setting per device or point, others only per network. easy? As a rule of thumb, the hardest part of setting up any integrated network is getting the correct information from the device you are trying to communicate with. Manufacturers' literature is AC-DC dual often confusing and lacks critical information. For example, why isn't there a Modbus standard for electricity meters? They both provide the same information, but they all label it differently? Often it's this sort of thing that prevents a successful integration between two devices.