| diagnostic data |
This field is used as the diagnostic data if the modbus
function field is set to 0x08 (loopback diagnostic request). |
| exception record |
Specifies whether this record is considered to be an exception
record or not. An exception record will be polled if the poll type
mask returned from the RTU matches the poll type mask for the
record. |
| modbus function |
Specifies the Modbus function to use for this record. |
| register |
Specifies the Modbus register to use in the request to the RTU. If
the loopback diagnostic "modbus function" is used, this field
represents the diagnostic code value. |
| modbus type |
Specifies the RTAP data element type equivalent for the data being
returned from 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. |