Pin
Name
Direction
Description
of Signal
31
INIT/N
Input
This is the reset signal for the combination controller.
The printer is normed (as after the power supply is
switched on when it receives an INIT/N “Low”
impulse lasting at least 50us).
32
ERROR/N
Output
This signal indicates whether the printer is in an error
state or not. It is at “Low” in the following cases:
during the switch-on norming;
during the self-test printing;
in the “Off Line” mode;
when a device error has been recognized.
33
GND
Signal Ground
34
NC
not used
35
+5 V
Output
This signal indicates whether the printer is switched
on or not. “High” means that the power supply is
switched on.
36
SELECTIN/N Input
This signal is set at “High” by the controller.
All signal names with the ending “/N” are “Low” active; all others are “High” active.
Note:
The connection cable to the system must be screened off and contain twisted
wire pairs for each signal. The second wire of each pair is to be connected to
the signal ground. The screening must be connected to the system housing.
Data must not be transmitted unless ACKNLG/N or BUSY have been
checked beforehand. Data may only be transmitted to the printer when it has
been ascertained beforehand that an ACKNLG/N impulse appeared or
BUSY = “Low”.
Please note that the BEETLE /60 mode is not supported in connection with
the Centronics interface!
Appendix
Interfaces
GB - 87
