Modbus interface
Installation Manual
(3) Change of central controller ID
• Change SW1 to 1-F and press SW4.
• If using Modbus interface with a central control device not compatible with Uh Line, set as “old controller.”
NOTE
Because the Uh Line compatible central control device uses high-order central controller ID, setting of central
controller ID1 to ID6 cannot be done with Modbus interface.
(4) Conclusion of central controller ID setting mode
• Turn off bit1 of SW3.
• Return the SW1 value to that of the Modbus slave address.
IMPORTANT
Immediately after the power is turned on for the Modbus interface, the SW1 value is the Modbus slave address.
When the power is turned on, if the SW1 value is that of the central controller ID or is 0, the Modbus interface
will not operate properly.
When concluding the central controller ID setting mode, be sure to return the SW1 value to that of the Modbus
slave address.
Central controller ID
SW1
Central controller ID7
1
Central controller ID8
2
Central controller ID9
3
Central controller ID10
4
Central controller ID11
5
Central controller ID12
6
Central controller ID13
7
Central controller ID14
8
Central controller ID15
9
Central controller ID16
A
Central controller ID17
B
Central controller ID18
C
Central controller ID19
D
Central controller ID20 (initial value)
E
Old controller
F
16-EN
