BRAILLO
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B 650 SF
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7.18 Connection to Printer, schematic
The line “Cutting signal” serves three different signal purposes:
1. What size is the sheet.
2. When to cut the paper.
3. What is the last sheet in a book.
1. The size of the sheet is sent as a coded message before the Printer starts. When the Printer receives
a le from the computer, the Printer calculates the size depending on the margins and the line length
selected. This size information is then sent to the S&F and it will adjust itself automatically to the cor-
rect sheet length.
2. The Printer sends a 120 mS pulse as a cutting signal during regular printing.
3. The Printer sends a 30 mS pulse as a cutting signal when it is ready to cut the last sheet in the book.
This will make the S&F get the cover (if selected) and staple and fold the book.
The line “Alarm to Printer” will send signals from the S&F to the Printer.
One 5 mS pulse sets the Printer to “ready” mode.
Two 5 mS pulses will pause the Printer.
The line “Motor status” is used in combination with the cutting signal to differ from a regular cutting
pulse and sending of the sheet size.
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