Microcom 438TM, Руководство оператора, Страница: 97 / 231

Chapter 5 Printer Commands
438TM Operator’s Manual - 880049-0113 5-29
Mode is entered the printer will stay in General Purpose Mode thru
subsequent power cycles.
Exiting General Purpose Status Byte Mode
A printer that is in General Purpose Mode will stay in General Purpose mode
thru power cycles until the “Disable General Purpose Mode” command
(^ABxxxxxxx0^D25) is issued. The next power-ON after a “Disable General
Purpose Mode” command will cause the printer to leave General Purpose
Mode.
Note: A default power-ON will also take the printer out of General Purpose Mode.
5.4 Specialized Print Modes
5.4.1 Synchronous Print Mode
This mode allows the printer to be synchronized to external equipment thru an external
PRINT control line. Using this command allows the printing to be synchronized with
external printing applications by replacing the ^D3 print command with the desired ^D116
sync mode. Printing begins ~11 microseconds after the rising edge of the PRINT control
line.
Connector P17 is the input port.
1 = ground
2 = g/p input 1 - Print
3 = ground
4 = g/p input 2 - Print Test Pattern
5 = ground
6 = g/p input 3 - Reset
7 = ground
8 = g/p input 4 - Abort Sync (Sync Reset)
All inputs are active high. 24.0 VDC = high 0.0 VDC = low
Connector P21 is the output port.
1 = ground
2 = g/p output 1 - Not printing (Low = Printing)
3 = ground
4 = g/p output 2 - Error
5 = ground
6 = g/p output 3 - Downloading a format
7 = ground
8 = g/p output 4 - Format loaded
All outputs are active high. 24.0 VDC = high 0.0 VDC = low
Signal logic levels:
The signals are active high and must be b15Vdc and +24Vdc to be “1”.
The signals must drop below +10Vdc to be “0”.