Visara SCON-25L Reference Manual - Manual (Page 36)

SCON-25L/28L/3074 Console Concentrator
1174-25S Communications Server Hardware Reference Manual
3-4 707028-007
Channel Interface Selector
When placed in the Online position, the controller is logically connected to the
host channel. When placed in the Off-line position, the controller is disconnected
from the host channel. The Off-line function is not complete until the Off-line
indicator is turned on.
A two-key sequence is required to toggle a channel online/off-line state.
Momentary push-button switches (as shown in Figure 3-2) are used for channel
online/off-line selection. When toggling to the Off-line mode, a status line message
(such as “A: Off-line Pend”) is displayed on the LCD upon recognition of the
key sequence when currently online. Once disconnected from the channel, the
message changes (such as “A: 503-01”).
• For single- and two-channel units, the selected channel button must be pressed,
then the Enter key must be pressed to toggle the state.
• For units with more than two channels installed, press the Channel 1 button,
then the desired channel number (1-8 on the keypad) is pressed to toggle the
channel state.
For Bus and Tag interfaces, the channel online/off-line state is stored in nonvolatile
memory. When the controller is powered off then on, the controller channel online/
off-line state will be that when last powered off. The controller is shipped with
both channels in the off-line state. For ESCON, the channel will always attempt to
go online after power up.
IML
When the 25S/25L/28L/3074 is first powered on or the IML button is pressed (and
the unit is offline) an IML occurs. The LCD on the operator panel displays messages
indicating the progress of the IML.
The “mode prompt” appears on the LCD at state 500: IML 500 M=
At this state, the LINCS node will pause for five seconds waiting for input
from the operator keypad illustrated below. If nothing is specified within five
seconds, the standard IML will proceed.
• 1 – Boots from trial (merge) directory.
• 2 – Boots from system (production) directory - default.
• 3 – Boots from backup directory.
• ADV – Continue IML with system microcode. No extended BATs are executed.
• ALT, ADV – Same as ADV, but executes extended BATs during IML.
• DIAG – Enters Diagnostics mode.
• CONFIG – Loads default customization data objects instead of the ones defined
in the system subdirectory. This option is useful when a problem with the
customization data affects the operation of the LINCS node. This option allows