Copy Config; Mac Address And Max_Master - Neptronic EFCB Series User Manual

5) Repeat steps 1 to 4 for each controller.
6) To increase network efficiency or if there are less than 127 devices on the network, the Max_Master
value can be configured through WriteProperty service to the Device Object.Max_Master. For more
information, refer to the MAC address and Max_Master section on page 4.

Copy Config

Copy the controller's entire configuration and broadcast it to other controllers of the same type on the same
network.
1) With the thermostat in Operation Mode (jumper = RUN), go to the Quick Access Menu by pressing and
holding both function buttons on the thermostat for 5 seconds. Refer to the controller's Specification &
Installation Manual for more details.
2) Enter the password (637).
3) Scroll to "Copy Config" and select yes. Follow onscreen instructions.

MAC address and Max_Master

The MAC address must be unique on the entire MS/TP network. However, having a unique MAC address and a
high baud rate does not guarantee efficient operation of the controller and other MS/TP units on the MS/TP
network. Some MAC address and Max_Master combinations are more efficient than others. BACnet
token-passing units to occasionally "poll" for other masters based on the MAC address and Max_Master. A
"poor" combination of MAC addresses and Max_Master can lead to a slower network due to lost time polling for
masters that are not present. Unless there are 126 other units on the MS/TP network, the default Max_Master
of 127 is not the most efficient choice for the controller. The Max_Master default of 127 was selected to ensure
that any master, specifically a BACnet
Example 1:
This example is slow and inefficient because every time either unit is required to find another master unit it has
to poll 126 units until it finds the right one to pass the token.

MAC=0. Max_Master=127

MAC=1, Max_Master=127
Example 2:
This example is better but it's still slower. The Max_Master is set to the most efficient value; however because
of the gap between the two MAC addresses, each unit must poll 4 units until it finds the right one to pass the
token.

MAC=0. Max_Master=5

MAC=1 to MAC=4 are not used

MAC=5, Max_Master=5
Example 3:
This example is an incorrect configuration. The MAC=0 will never find MAC=2 because it will never poll for the
master MAC address=2.

MAC=0. Max_Master=1

MAC=2, Max_Master=2
Example 4:
As a general guideline, the most efficient set up for an MS/TP network is one in which the units are
consecutively numbered starting at MAC address 0 and all have Max_Master=the maximum MAC address in
the system. If consecutive numbering is not possible, then the next most efficient set up is one in which all units
have Max_Master=the maximum MAC address in the system.

MAC=0. Max_Master=3

MAC=1, Max_Master=3

MAC=2, Max_Master=3

MAC=3, Max_Master=3
®
client, can be found when the controller is first started.
EFCB Series Controller
®
requires
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