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class and all printers in the class are not functioning, this message would be
displayed. In all these cases, the print request is queued, and the keyboard is locked
until the copy can be performed or the operator cancels the print request. The
RESET key has no effect while a print request is on the queue; however, the
operator can cancel the local copy request by pressing the DEV CNCL key sequence
while the request is on the queue. This action clears the Input Inhibited message,
unlocks the keyboard, and removes the print request from the queue. The operator
is then free to perform another task.
If the print ID is a port number, and the printer is not functioning, then the Input
Inhibited Printer Not Working (X PRTNW) message is displayed in the status line
and the keyboard is locked. The operator must press the RESET key to continue.
This action clears the Input Inhibited message and unlocks the keyboard. The print
request is not queued. The operator may then choose an alternate action.
If no valid print class. or printer is defined for this display (print ID
=
00) and the
PRINT key is pressed, the Input Inhibited Operator Unauthorized (X OP X)
message is displayed and the keyboard is locked. The operator must press the
RESET key sequence to clear this condition.
When the 3708 determines that a printer is available to service the print request, the
display buffer-to-printer transfer begins, the display keyboard is locked, and the
Printer Busy symbol remains displayed The Printer Printing (PRNT) indicator
replaces the print ID in the status line. Once the printing operation is complete, the
Printer Printing indicator is replaced by the original print ID and the Printer Busy
message is cleared.
If the printer stops during a local copy operation (out of paper, paper jam, or so
on), the Printer Not Working message replaces the Print Busy message and the
print is terminated. The keyboard remains locked. In this state, the RESET key
clears the condition.
If a Model 5 terminal user performs a local copy to a printer configured with a
platen length of less than 132 characters, output may be lost. It is recommended
that Model 5 users perform local copies only to printers configured with platen
lengths of 132 characters.
Host Interference with Operator Copy
Once the display operator has initiated a local copy operation, any outbound FM
data request is rejected with a Busy sense code (0820), if it is received during the
time that the operator request is queued or the data is being printed. Once the print
has been completed, the display is free to receive outbound FM data requests.
Host-Initiated Local Copy
The host application program may initiate a local copy function by sending to the
display station a write-type command with the Start Print bit in the WCC turned on.
The 3708 performs the local copy function as required, using the print ID displayed
in the status line. When a write-type command is sent to the display with the Start
Print bit on, the 3708 first interprets the orders and data in the write data stream
and updates the display screen. Once the screen update is completed, the 3708
attempts to use the printers it assigned to the display. The Time (X CLOCK)
message is replaced by the Input Inhibited Printer Busy (X PRTBSY) message while
the copy operation takes place.
Chapter
4.
Protocol Conversion Mode
4-87
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