DNS-24, DNT-T103 & DNT-T221 Application Guide
Page 38 of 43
Document Edition 4.2
APPENDIX B: LINKnet
Configuration Menu Options
Menu Item
DSP
On LINKnet BACstats communicate at 76,800 bps. Refer to the
Working with MS/TP
and LINKnet
appendix within the
Technical Reference Manual
.
Menu Item
Add
On LINKnet, this address is the physical address for the device (limited to 1 to 12)
and the other address settings are irrelevant.
Menus Item
Lnt
The LINKnet Communications Setting (O
N
or O
FF
), to match the connection
method. The
Lnt
should be set to O
FF
when connecting to MS/TP.
As the temperature units (
º
C or
º
F)
can only be set via the Configuration Menu at the device (when
connected on LINKnet), you may want to set this at the same time.
Input Calibration
LINKnet Connection
With local handling of the LCD display and buttons
disabled (AVx15 = 1111)
, the BACstat sends A/D
values to its associated AI objects in the Application Controller, where calibration and filtering is
applied. Calibrate the AI objects in the Application Controller.
With local handling of the LCD display and buttons
enabled (AVx15 > 1111)
, the BACstat sends
actual values to its associated AI objects in the Application Controller – all calibration and filtering is
done in the BACstat. Calibrate the BACstats locally (via Service Tool Menu) or use the mapped AV
objects (See the Objects table). Do not calibrate the AI objects in the Application Controller.
Device Limitations
Note that there are inherent limitations to the total number of devices per LINKnet network, as well as
the number of devices that have outputs. Refer to the appropriate Appendix in the ORCAview
Technical Reference Manual for further information.
Control Applications
BACstats with I/O should have their built-in control applications
disabled
. If you wish to have
BACstats running a local control strategy, then it should be connected to an MS/TP network instead.
Objects
Only the BACstat information that is represented by objects resident in the Application Controller is
readily accessible over the network. The objects resident within each BACstat are not directly
accessible to other devices in the system. To gain access to BACstat objects, you create objects in the
Application Controller that correspond to the objects located in its respective BACstats.
Object
Name
Description
Creation
LCDx01
LinkLCD#
Object for BACstat LCD &
Button Presses
Automatic
AIx01, 02, 03, 04
[User Specified]
Matching object for the Input
Value
Manually
BIx05
[User Specified]
Matching object for the Input
Value
Manually
AVx01, 02, etc.
[User Specified]
Matching object for the
corresponding AV
Manually
where “x” refers to the device address (1 to 12).
