Word 0: Parameter, SPA Specifies the parameter number. Applicaton Layer Word 1: Primary Index, SPA Specifies the primary index number for the parameter specified by word 0. Word 2: Secondary Index, SPA Specifies the secondary index for the parameter specified by word 0. This word is ignored for parameters that don’t use multiple indexes. Words 3, 4: New Value, SPA The new value of the specified parameter and index. Word 5: Decimal Place, SPA This word specifies the number of decimal places for the value in words 3 and 4. Positive values indicate that the decimal place shifts to the left, and negative values indicate that the decimal place shifts to the right. If word 5 = 1:
all returned values have the decimal place shifted 1 space to the left and a returned value of 5,213 is interpreted as 521.3. If word 5 = –1: a returned value of 5,213 is interpreted as 52,130. Word 6: Format, SPA This word is always 0. Word 7: Read / Write Flag, SPA This word determines whether the instrument will allow parameter values to be written. 0 = read 1 = write Page 34 SmartLinx DeviceNet – INSTRUCTION MANUAL 7ML19981BH02