Time-tagged measurands with relative time with the value in the packet represented by a single floating point number.* Short floating-point number stored in IEEE STD 754 format (Fraction, Exponent, Sign) (7.2.6.20) 5 Identification data composed of 12 characters of data. Each point in defined of this data type should reserve 12 bytes (6-word addresses) in the database for the data received. Byte data as defined in 7.2.6.2. First 8 bytes are characters 1 to 8 and last 4 bytes are manufacture bytes either decimal (0 to 255) or as ASCII characters.Measurands with quality descriptor. The lower 3 bits of the values represented in this data type contain status information. The upper 13 bits of the value contained a signed, 12-bit number. This data type will return from 1 to 9 values (some slaves may return up to 16 values). The number of words received is dependant on the information object number and the slave device
General command to control a dual-point object.
Each command issued by the module uses the values of two adjacent bits in the database or an override value specified by the user command.Therefore, address 16000 represents bit zero in word 1000 of the module's database. Short floating-point, 32-bit strings and integrated total values each occupy a double-word space in the database. Therefore, short float database address of 100 represents the two words, 200 and 201, in the module's database.The side-connect interface is the simplest method to implement the module. No ladder logic is required for the interface because the driver handles data movement between the module and the processor automatically.
The configuration information
for the module determines the size of the read and write data areas and the locations of these data sets in the module's internal database. Therefore, to use this interface, just set up the files required by the module.When the side-connect interface is utilized, registers in the first user data file for the module are used for command control (offset 50 to 113). The format of these control commands is similar to that described in the command control section. The first words of this file store the error/status information for the module. The Reference chapter contains a listing of the data contained in the error/status data table.
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