Modbus RTU (Gen1)

note this driver will be deprecated in a future release we recommend using the gen 2 modbus rtu docid\ scvx7afta0d9jarxknujq review the following information for setting up and configuring the modbus rtu (gen1) driver manufacturing connect edge compatible series compatibility parameter compatible items driver type serial when to use serial connection to a device using modbus rtu replaced with gen 2 driver modbus rtu docid\ scvx7afta0d9jarxknujq to set up and configure this device in manufacturing connect edge, you will need to do the following step 1 set up and configure the plc device step 2 set up the plc device in manufacturing connect edge devicehub step 3 configure the list of registers step 1 set up and configure the plc device record the serial communication parameters for the device otherwise, use plc software on your computer to look up these parameters these parameters will be used for setting up the driver in the next step step 2 set up the plc device in manufacturing connect edge devicehub configure the following parameters when you connect a device docid\ rfvijdxz7dbad8mwbisma with this driver update default values to the specific set up of your device parameter value type modbus driver modbus rtu (gen1) communication port local serial connection file path data bits 8 baud rate 9600 parity even, odd, none stop bits 1 station id 1 step 3 configure the list of registers when you add tags docid\ ioanzd2awqnkuppgee3eh to the connected device, refer to the following register table and tag parameters refer to the following additional resources device and tag metadata use case docid\ f b720nivllber44rfyhn tag formula variables docid\ pwd 7p kzjxkt pyawaow register table name value type address format min address max address description d bit dddd 1 9999 discrete input contacts c bit dddd 1 9999 discrete output coils h bit bit dddddd 100 999915 analog output holding registers i bit bit dddddd 100 999915 analog input registers h int, uint dddd 1 9999 analog output holding registers i int, uint dddd 1 9999 analog input registers h ulong ulong, ulong (big endian) dddd 1 9998 analog output holding registers i ulong ulong, ulong (big endian) dddd 1 9998 analog input registers h float float, float (big endian) dddd 1 9998 analog output holding registers i float float, float (big endian) dddd 1 9998 analog input registers h double double, double (big endian) dddd 1 9996 analog output holding registers i double double, double (big endian) dddd 1 9996 analog input registers tag parameters name select a register name from the drop down list the available options depend on the names in the register table value type select a data type from the drop down list the available options depend on the register name selected polling interval enter a value in seconds this determines how often the tag should poll the register for data tag name enter a name for the tag description (optional) enter a description for the tag address enter a tag address the value must in the decimal format, within the allowed min/max range omit the leading zeros the device might use the decimal (d), hexadecimal (h), or octal (o) address format see the register table at the bottom of the dialog box for bit tags, append the bit address without the bit separator the lowercase letters in the address format indicate how many digits you should enter in the bit address count enter the number of register values to read a count higher than 1 will generate an array of values from the address value configured and respective subsequent address values tag formula enter a formula for the tag to process the generated data two variables are permitted value (current tag value) and timestamp (current tag unix time in milliseconds) the following math functions are available sin cos sqrt tan power power( x ) performs the operation 10^x log log( x ) is the natural logarithm (the logarithm is in base e ) exp exp( x ) performs the operation e^x only publish on change of value select the checkbox to customize nats messages to be published only when the value parameter changes from a previous value to a new one change of value only applies to boolean, numeric (such as int or float), and simple string data types it does not apply to complex types, such as json or array poll once topics will not be affected by change of value settings these topics will still only see a single message meta data metadata summarizes basic information about data this feature allows you to define key value pair data for the device output payload later on it can then be used to find, use, and reuse particular instances of data note if you use special characters in meta data key names, the special characters are replaced with underscore characters in the payload this can cause two key names to be combined into one for example, configuring the key names a b and a&\&b will cause only one key name to be created (a b)