ICC XLTR-1000 Instruction Manual page 49

ICC
Polarity
Applies to binary input and binary output objects only. This field indicates the
relationship between the physical state of the object (as stored in the gateway's
database) and the logical state represented by the object's present value
property. If the physical state is active high, select Normal from this dropdown
menu. If the physical state is active low, select Reverse from this dropdown
menu. For further detail, refer to the Bitmask behavioral description above.
Data Type
Applies to analog objects only. This field specifies how many bytes are allocated
for the present value data, as well as whether the value should be treated as
signed or unsigned when converting it to a real number to send over the network.
Select the desired data type from this dropdown menu.
Note that each data type has its own range limitations: 8-bit data types can have
values up to 255, 16-bit data types can have values up to 65,535, and 32-bit data
types can have values up to 4,294,967,295.
Relinquish Def
This field is the default value to be used for an object's present value property
when all command priority values in the object's priority array are NULL. Note
that this property only exists for those objects that implement a priority array
(analog output, analog value, binary output and binary value objects).
8.6.4.4 Configuration Example
This example will configure one port of the gateway (port A) for communication
using the BACnet MS/TP server driver. This example will only detail the
configuration of the BACnet server driver and related objects, with the goal of
mapping data from the BACnet MS/TP network into the gateway's database.
Once this data is mapped into the gateway's database, it is then accessible for
reading and writing via any other supported network connected to the other
gateway port (port B).
Assume that we have a building automation system (BAS) that can act as a
BACnet MS/TP client connected to the gateway's "RS-485 A" port. The BAS
exchanges information (through the gateway) with different floors of a building.
There are 3 floors; floor #1 has 3 analog values at instances 1000, 1001, and
1002 for monitoring the floor status and 3 analog values at instances 1003, 1004,
and 1005 for executing commands on the floor. Similarly, floors #2 and #3 have
the same analog values for monitoring and commanding starting at instance 2000
for floor #2, and starting at instance 3000 for floor #3.
Configure the "RS-485 A" port using the above requirements
Connect the gateway to the PC via a USB mini type-B cable.
•
• Open the configuration utility and select the XLTR-1000 (see section 8.1 for
more information on selecting a device).
• Click on the RS-485 A Configuration tab.
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