Modbus serial device, Settings tab, Label – Contemporary Control Systems BASview User Manual
Page 52: Description, Address, Sentinel point, Use modbus function 6 to write data, Group settings tab, Advanced tab, Name
TD110500-0MC
52
Modbus Serial Device
This screen is used to configure access to a single device on a Modbus serial network.
Settings Tab
Label
Label is the name of the item as displayed in the
are sorted alphabetically by label.
can be used to organize items.
Description
Description is optional text that describes the item. It can be any descriptive text or be left blank.
Address
The Modbus address of the device (1
–254). This can usually be found by looking at DIP switches on the
device, or through the devices setup software.
Sentinel Point
The sentinel point is any valid point on the device that can be read to verify proper communications. This
is an optional feature and if not specified, output #1 will be used. It is only used in cases of suspected
communications failure.
Addressing for information on how to specify the sentinel point address.
Use Modbus function 6 to write data
Check this box to use Modbus function 6 (Preset Single Register) to write data rather than function 16
(Preset Multiple Registers). Some Modbus devices do not properly support function 16.
Leave this unchecked unless errors occur when writing point values to the device, or it is known that
function 16 is not supported.
Group Settings Tab
These determine which user groups can see this item in the tree. Unchecking the default “Allow Everyone”
enables selecting individual groups. If a group cannot see an item, items under it are also unseen.
There are “Check All” and “Uncheck All” buttons in the upper-right corner to make major changes easier.
Advanced Tab
Name
Name is used for advanced features. If left blank, it will be assigned automatically. It is recommended
that the default value not be changed. It can be up to 48 characters. Only A
–Z, a–z, 0–9, period (.) and
underscore (_) are allowed. Names are case sensitive.
Node ID
This internal reference ID of this node is read-only
— and rarely needed by the user.
Disable communication with this device
Check this box to prevent communications with this device. Uncheck for normal operation.