Associated with: Various items on the Advanced Modbus driver
The Source attribute is common to many Status displays. The attribute indicates the location at which the item resides. The information shown varies, depending on the item.
The Source attribute displays the value Undefined if the item’s configuration is incomplete, in so far as the device with which the item is associated has not yet been specified.
For Generic Modbus controllers, information is displayed in this format:
Set <Set Address>:OS <Controller Address>
Example:
Set 2:OS 5
(For a controller with an address of 5, in the set that has an address of 2.)
For Generic Modbus points, information is displayed in this format:
Set <Set Address>:OS <Controller Address>:<Point Type> Address <Point Address>
Example:
Set 2:OS 5:AI Address 30001
(For an Analog Input point located at point address 30001, on the controller that has an address of 5. The controller is in the set that has an address of 2.)
For a Digital Input or Digital Output point, the information is appended by the number of bits and (if applicable) the bit offset. (The bit offset is only displayed if the point resides within an applicable address range - see Common Point Properties.)
Example:
Set 2:OS 5:DO Address 40002 Bits 1 Offset 3
(For a 1-bit Digital Output point located at point address 40002, offset 3, on the controller that has an address of 5. The controller is in the set that has an address of 2.)
The Source attribute displays the type of Generic Modbus point using these abbreviations:
| Abbreviation | Type of Point |
|---|---|
|
AI |
Analog Input Point |
|
AO |
Analog Output Point |
|
DI |
Digital Input Point |
|
DO |
Digital Output Point |
| String | String |
| T | Time |