74 Rockwell Automation Publication 1769-UM011H-EN-P - April 2012
Chapter 4 Communicate over Networks
6. Specify communication settings.
7. Click the System Protocol tab.
8. From the Protocol pull-down menu, choose DH485.
9. Specify DH-485 settings.
10. From the Protocol pull-down menu, choose DF1 Radio.
The baud rate specifies the communication rate for the
DH-485 port. All devices on the same DH-485 network
must be configured for the same baud rate. Select 9600 or
19200 KB.
Table 11 - System Protocol Specifications
Characteristic Description
Station Address Specifies the node address of the controller on the DH-485 network. Select a number 1...31 decimal, inclusive.
To optimize network performance, assign node addresses in sequential order. Initiators, such as personal computers, should be assigned the lowest address
numbers to minimize the time required to initialize the network.
Token Hold Factor Number of transmissions plus retries that a node holding a token can send onto the data link each time it receives the token. Enter a value between 1...4. The
default is 1.
Maximum Station
Address
Specifies the maximum node address of all the devices on the DH-485 network. Select a number 1...31 decimal, inclusive.
To optimize network performance, make sure:
• the maximum node address is the highest node number being used on the network.
• that all the devices on the same DH-485 network have the same maximum node address.
To Next Page
Loading...
