Figure 43: Rs-485 Termination - ABB LevelMaster 7100 User Manual

14. Click Set New ID. A notification will appear when this is complete.
15. Click OK.
16. When prompted to update to reflect the new ID, click Yes. The ID is saved in the location file associated with the
LevelMaster and will be displayed on the main screen when the LevelMaster is selected.
17. If the unit will be connected to additional units, configure termination RS-485 if needed.
a. If the LevelMaster is an intermediate unit on the bus, there is no need to change configuration for termination. The
factory default sets the unit as intermediate. Proceed as follows:
i. If connecting to an ABB Totalflow host controller, proceed to section 6, Configuring the host controller.
ii. If the unit is not connected to an ABB Totalflow host controller, proceed to calibrate the unit or add level bias in
section 5.3.3, Calibration (standalone installations only).
b. If the LevelMaster is the only unit installed or it is the last unit on an RS-485 bus, proceed to section 5.3.2,
Configuring RS-485 bus termination.
Configuring RS-485 bus termination
Use this procedure in order to eliminate signal echo if the LevelMaster is the only unit or the last unit on an RS-485 bus. This
procedure applies to boards with part number 2104836-001.
To configure termination:
1. Click on the Monitor tab and select the Add Advanced Setup tabs. Additional tabs display.
2. Click the More items tab.
3. Select Show memory map.
4. Scroll down to locate the 844 memory address. The description of this memory location is "RS485 bus termination"
(Figure 43).
5. Double-click on 844 RS485 bus termination.
6. When the edit box displays (Figure 44), if the value is 0, change the value to 1. The value of 1 configures the unit as the
only or last sensor on the RS-485 bus.

Figure 43: RS-485 termination

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