Configuring the DF8000 I/O via COM Port
Scenario: You want to configure DF8000 I/O modules connected to a remote DF8000 CPU unit that communicates to the NK823x unit over a serial line.
Reference: For background information see DF8000 Reference.
Workflow diagram:
Prerequisites:
- Desigo CC is connected to the NK823x unit.
- System Manager is in Engineering mode.
- System Browser is in Management View.
Steps:
1 – Add the DF8000 with a DF8003 CPU
- In System Browser, select Project > Field Networks > [BACnet network].
- Select the Object Configurator tab.
- Click New and select New GMS_DF8000_Serial.
- In the New Object dialog box:
a. (Optional) Edit the precompiled name and description (DF8000 System via COM Port).
b. Click OK.
- The new DF8000 System via COM Port object is added and automatically selected in System Browser.
- Select the DF8000 tab.
- In the Configuration expander, enter the Instance number (the BACnet Device Identifier).
- Click Save to enable the remaining fields.
- In the Configuration expander:
- Select the communication Baud Rate
- Select the Line Type (for COM 1 and COM2: RS232 or RS485)
- Select Support CF9003 if you want to connect a CF9003 unit
NOTE: 19200 bps Baud Rate is not allowed for CF9003
- Click Save .
- A new DF80003 CPU, with address set to 0, is added to System Browser, and to the Units expander of DF8000 System via COM Port.
2 – Add Input / Output Modules to the DF8003 CPU
Repeat this procedure for all the input / output modules connected to the DF8003 CPU.
NOTE: You cannot mix supervised modules (DF8045 and DF8046) with On/Off modules (DF8020 and DF8040) on the same CPU. Instead, different I/O units can coexist on the same RS485 bus until the maximum addressing limit is reached. See Valid DF8000 I/O Configurations on I2C Bus.
- In System Browser, select Project > Field Networks > [BACnet network] > [DF8000 system via COM Port] > [DF8003 CPU].
- Select the DF8000 tab.
- Click New and select the type of module you want to add:
- DF8040 Digital Input Module
- DF8020 Relay Output Module
- DF8045 Balanced NC Input Module
- DF8046 Balanced NO Input Module
- In the New Object dialog box:
a. (Optional) Edit the precompiled name and description.
b. Click OK.
- The new module is added to System Browser, and to the Modules expander of the DF8003 CPU.
- In the Modules expander, select the newly added module.
- Enter an Address (1-6) that matches the setting on the hardware module. Be aware that addressing errors are not notified as fault events.
- Click Save .
3 – (Optional) Add Other DF8003 CPUs with I/O Modules
Do this procedure if the hardware configuration includes additional DF8003 CPUs.
- In System Browser, select Project > Field Networks > [BACnet network] > [DF8000 system via COM Port].
- In the DF8000 tab click New .
- In the New Object dialog box:
a. (Optional) Edit the precompiled name and description.
b. Click OK.
- The new DF80003 CPU is added to System Browser, and to the Units expander of DF8000 System via COM Port.
- In the Units expander, select the newly created DF8003 CPU.
- Enter an Address (0-15) that does not conflict with those already used for other DF8000 CPU units. See Valid DF8000 I/O Configurations on I2C Bus.
- Click Save .
- Configure the I/O modules connected to this DF8003 CPU. See Add I/O Modules to the DF8003 CPU, above.
4 – Connect the DF8000 to the NK823x COM Port
- In System Browser, depending on the NK823x serial line connection, select one of the following:
Project > Field Networks > [BACnet Network] > [NK823x] > [com port]
Project > Field Networks > [BACnet Network] > [NK823x] > [Expansion Board] > [com port].
- Select the NK8000 tab.
- In the Configuration expander, from the Control unit drop-down list, select the DF8000 System via COM Port configured above.
- Click Save .