65
ICC
8.7.11.2
Service Object Configuration Group
Up to 64 service objects can be created.
Description
This field is a description of the service object. It is not used on the gateway, but
serves as a reference for the user. Enter a string of up to 18 characters in length.
Connection
Select the desired connection object from this dropdown menu (refer to section
8.7.11.1). Connection objects automatically appear in this menu after they are
created.
Unit ID
This field is used primarily for intra-system routing purposes. Many Modbus TCP
servers ignore this field.
Type
Select the desired function type from this dropdown menu. This field designates
the Modbus data type that this service object will access on the remote server.
Start Register / Start Discrete
For holding register and input register types:
this field defines the starting
register number for a range of registers associated with this service object. Enter
a value between 1 and 65535.
For coil status and input status types:
this field defines the starting discrete
number for a range of discretes associated with this service object. Enter a value
between 1 and 65535.
Num Registers / Num Discretes
For holding register and input register types:
This field defines the number of
registers associated with this service object. Enter a value between 1 and 125.
For coil status and input status types:
This field defines the number of discretes
associated with this service object. Enter a value between 1 and 2000.
DB Addr (“Database Address”)
This field defines the database address where the first register/discrete of this
service object will be mapped. Enter a value between 0 and 4095. 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.
