RFL Electronics RFL 9660 - Setting the Port Password

3.10.4 SETTING THE PORT PASSWORD
The port password is a character string that must be entered before a user is allowed to access a device port. If
a password is set for a device port, all users will be asked to enter the password each time they try to access
the port. They will not be granted access unless they enter the password correctly.
To enter or change the password assigned to the selected device port, press the [D] and [ENTER] keys. The
following prompt will appear on your display:
Enter new password: _
The port password can contain up to seven characters. Port passwords do not have to be unique; in fact,
groups of devices can be assigned the same port password. For example, you may want to give all the relays at
the substation the same password, so only the relay engineers can access them. Once you have entered the
port password, press the [ENTER] key.
NOTE
Port passwords are case-sensitive. Once you enter a port password, all users must enter it the
same way you did; otherwise, the RFL 9660 will not accept it.
3.10.5 SETTING PORT FLOW CONTROL
The "j," "k," and "l" selections allow you to set flow control for the port. "Flow control" governs the rate at which
information passes between the RFL 9660 and the device connected to the port. Without flow control, data to
and from the device might be corrupted. The flow control setting must be set to match the flow control
requirements of the device connected to the port. (Refer to the manual supplied with the device or contact its
manufacturer for more information.)
The RFL 9660 uses character-based flow control for "outbound" messages from the RFL 9660 to the device.
Messages going from the device to the RFL 9660 ("inbound" messages) are fed to a 256-character buffer. The
RFL 9660 will exercise its flow control for inbound messages after 128 characters are sent to the buffer. This
gives the sending device 128 characters to start using its flow control. If the buffer fills up before the device halts
its output in response to the RFL 9660's handshake, data corruption will occur.
To set flow control for the port, use the following procedure:
1. Press the [L] and [ENTER] keys.
The following prompt will appear on your display:
0 None
1 RTS/CTS
2 DSR/DTR
3 XON/XOF
_
This selection lets you specify the flow control method the port will use.
2. Select the flow control method you want from the list on the screen, enter the number next to it, and
then press the [ENTER] key.
RFL 9660 RFL Electronics Inc.
October 1, 1999 3-17 (973) 334-3100