| register |
Specifies the Modbus register to use in the request to
the RTU. |
| num elements |
Number of elements to be sent. |
| modbus function |
Specifies the Modbus function to use for this record. |
| modbus type |
Specifies the RTAP data element type equivalent for
the data being sent to the RTU. If this value is equal to
rtUNDEFINED, then default data element types will be used. |
| register count |
Specifies the number of registers to request for from
the RTU for each value. For example, a floating point value could be
kept in the RTU in two 16 bit registers, and could be retrieved back
as two registers, and saved in the RTAP database as a single value.
In this example, this value would be two. The driver will optimize
over this count (ie. the next record in the scan input table can
contain the value of this record's register plus two, and the two
will be polled for in a single poll). For digitals, this value
should always be one. |