Compuprint 9058 Programmer Manual - Manual (Page 131)

The Parallel Interface
A78408098-003 C.2
The Parallel Interface
The parallel interface of this printer fully supports the Centronics
protocol plus the specific features requested by the EPSON and IBM
printer connection in monodirectional mode and the Compatibility
and Nibbles modes in bidirectional mode, plus the negotiation phases
and the device identifier (as IEEE P1284).
The parallel interface is available on a specific 36 contact connector
type AMPHENOL 57-40360-12-D56 or equivalent connector for 1284
Type B.
•
Drive Capability
Up to 15 feet (5 m) on AWG26 min. wire size of twisted
conductors on TTL receiver. The max. reachable distance is
conditioned by the host drive capability and by the noise level
along the interface cable path.
• Printer Connector Type
36 pins, 1284 Type B
• Cable Connector
25 pin, 1284 A Type
Signals Description
According to the IEEE - P1284 Standard, the pins assume different
meanings and are identified by different names depending on the
actual handshaking mode as follows:
• Compatibility mode (Centronics)
This is the lower level mode provides an asynchronous, byte-wide
forward (host-to-peripheral) channel with data and status lines used
according to their original definitions. The interfaces power up in the
compatibility Mode Idle phase.
.