114
ICC
Num Insts
This field is the number of N2 objects in this service object. Enter a value of 1 or
more.
Database Addr
This field is the database address where the first N2 object of this service object
will be mapped. Enter a value between 0 and 4095 (0x0 – 0xFFF).
Note that the configuration utility will not allow entry of a starting database
address that will cause the service object to run past the end of the database.
The highest valid database address, therefore, will depend on the targeted data
type, as well as the number of items to be accessed.
Data Type
Applies to analog and internal objects only.
This field specifies how many bytes
are used to store the data for each N2 object in this service object, as well as
whether the value should be treated as signed or unsigned when converted to a
real number for transmission over the network. Select the desired data type from
this dropdown menu.
Note that each data type has its own range limitations: 8-bit can have values up
to 255, 16-bit can have values up to 65,535, and 32-bit can have values up to
4,294,967,295.
Multiplier
Applies to analog and internal objects only.
This field is the amount that
associated network values are scaled by prior to being stored into the database
or after being retrieved from the database. Upon retrieval from the database, the
data is multiplied by the multiplier to produce a network value. Similarly, the
network values are divided by the multiplier before being stored into the
database.
Note that the multiplier, coupled with the data type, imposes range limitations on
the network data value. For example, if the data type is 8-bit and the multiplier is
0.5, then the network data can have values only up to 127 (since 255 is the
maximum value that can be stored in 8 bits).
Read Enable and Function Code Selection
Check
Read
to enable reading (the service object will continuously read from the
remote device unless a pending
Write
exists). When reads are enabled, the
desired read
Function Code
can be selected in the drop-down box.
Write Enable and Function Code Selection
Does not apply to input objects.
Check
Write
to enable writing (when values
encompassed by this service object change in the gateway’s database, these
changes will be written down to the targeted remote device). When writes are
enabled, the desired write
Function Code
can be selected in the drop-down box.