Rockwell Automation 20-COMM-H RS485 HVAC Adapter FRN 2.xxx - Manual (Page 25)

Configuring the Adapter 3-3
20-COMM-H RS-485 HVAC Adapter User Manual
Publication 20COMM-UM009D-EN-P
Setting the Node Address If the Node Address switches on the adapter are set to “00,” the value of
Parameter 03 - [Net Addr Cfg] determines the node address.
1. Set the value of Parameter 03 - [Net Addr Cfg] to a unique node
address.
Figure 3.1 Example Net Addr Cfg 1 Screen
2. Reset the adapter (see Resetting the Adapter on page 3-8 ). The actual
node address is then displayed by Parameter 04 - [Net Addr Act].
Setting the Network Data Rate The data rate at which the adapter operates varies based on the type of
network and your network configuration. Refer to the following table.
1. Set the value of Parameter 05 - [Net Rate Cfg] to the data rate at
which your network is operating.
Figure 3.2 Example Net Rate Cfg Screen
2. Reset the adapter (see Resetting the Adapter on page 3-8 ). The actual
data rate is then displayed by Parameter 06 - [Net Rate Act].
Port 5 Device
20-COMM-H
Parameter #: 03
Net Addr Cfg
1
0 <> 247
Default = 1
Network Possible Data Rates
Modbus RTU 4800, 9600, 19200, 38400
Metasys N2 9600
Siemens Building Technologies P1 FLN 4800, 9600
Value Baud
0 4800
1 9600 (default)
2 19200
3 38400
Port 5 Device
20-COMM-H
Parameter #: 05
Net Rate Cfg
1
9600