Nortec Modbus - Manual (Page 18)

NHTC Electrode Steam Humidifiers
After wiring connections have been completed, the humidifier needs to be setup to operate and
communicate through the Modbus interface.
Modbus Address
The default Modbus address for an NHTC is 1. If multiple units were included on an order, the
addresses of individual units may vary. To view or change the unit number:
1 Press the Menu key to access the menu.
2 When prompted for a password, enter 0459 using the arrow keys. Press Set to confirm.
3 Select the Factory Settings menu and press the Set key.
4 Select the Core Parameters menu and press the Set key.
5 Select the Modbus Parameters menu and press the Set key.
Note: Do NOT modify other settings in the Factory settings manual. Adjusting other settings
can cause serious damage to the humidifier.
6 Select the Address setting and press Set to modify. Enter a value between 1 and 127
inclusive as desired and press Set to confirm the solution. It is recommended to leave the
parity and timeout settings to their factory defaults (Even and 300 respectively) unless
communication problems occur.
7 Press Esc repeatedly until you return to the home screen.
This procedure is summarized below:
Menu > 0459 > Factory Settings > Core Parameters > Modbus Parameters >
Parity: Even
Addr: 1 (Default, 1 – 127 acceptable)
Timeout: 300 seconds (Default, 5 – 600 acceptable)
Modbus Installation | 15