Rockwell Automation 1747-KE,D17476.12 DH-485/RS-232C Interface Module - Manual (Page 61)

Publication 1747-UM005B-EN-P - March 2006
Module Configuration Using an ASCII Terminal 5-7
DH-485 Port Menu The DH-485 PORT Setup Menu provides six selections.
DH-485 Port Menu
DH-485 Port Setup Parameters
When the module is powered up for the first time, the DH-485 port
will be set to the default parameters. If these parameters are changed
and the setup is saved, then the module will always power up with
the new settings, unless the battery fails and power to the module’s
RAM is lost.
DH-485 Port Setup Parameters
DF1 PORT Setup Menu
1. Baudrate
2. Bits per character
3. Parity
4. Stop bits
X. SAVE AND EXIT
Enter Selection. . . . .
Parameter Default Options Description
Node Address 2 0...31 (decimal) The address of this node on the DH-485 network. Every
device on the DH-485 network must be given a unique
node address. For optimum performance, set devices to
consecutive addresses starting at 0. This minimizes the
solicitation of new stations.
Max. Node Address 31 1...31 (decimal) The number of nodes that will be polled. For optimum
performance this value should be set no larger than the
value of the highest numbered node on the network.
Message Timeout 10,000 ms 100...12,750 ms The time to wait for a response to a message sent on a
DH-485 network.
Pass Through Disabled Enabled, Disabled Determines whether diagnostic commands are executed
by the module (Disabled) or passed through to the host
(Enabled).
Communication Rate 19200 300, 600, 1200, 2400,
4800, 9600, 19200 The speed in bits per second at which data is transferred
on the DH-485 link.
Important: All stations on the DH-485 link must be set to
the same communication rate.