Steckerbelegung

RS232

SignalEFS26Sub-D25Sub-D15Sub-D9EFS-10
SchirmB211-A5
102(Masse)A1,B1,A2775A1
103(TxD)A3233B2
104(RxD)B4322-
105(RTS)A5447-
106(CTS)B6558A3
107(DSR)A7666-
108(DTR)B820134-
109(DCD)A98?1-
111(SEL)B1023?--
113(TCK)A1124?--
114(XCK)B1215?--
115(RCK)A1317?--
125(RI)-22?9-

IFSS

SignalEFS10SubD25SubD15
SD-A11910
SD+B2109
ED+A31312
ED-B41415
SchirmA411

IFSP

Interface sternförmig parallel

All printer input signal lines were pulled up to +5V by 220 Ohm resistor, and pulled down to ground by 330 Ohm resistor. This allowed usage of longer cables comparing to Centronics, but overloaded most usual Centronics adapters.

Some devices allowed switching between IFSP and Centronics modes, i.e. Robotron 6319—6329 were manufactured with interchangeable interface modules, allowed usage of IFSP, IFSS and Centronics.

Signal description

Centronics—IFSP connection

Centronics signalIFSP signalIFSP signal descriptionSub-D PinEFS-39
StrobeSCTransmitter control14B2
Data 0D0Data signal17B5
Data 1D1Data signal18B6
Data 2D2Data signal19B7
Data 3D3Data signal20B8
Data 4D4Data signal21B9
Data 5D5Data signal22B10
Data 6D6Data signal23B11
Data 7D7Data signal24B12
ACK
BusyACReceiver control15B3
PEA4Paper End8B1
SelA0Receiver ready12B13
Autofeed XT
ErrorA2Error10A9
Init
SLCT INS0Transmitter ready13B4
GNDZGround1,7A1,C1,A4,C4,A5,A10,A11,A12
SchirmSchirmSteckergehäuseA13
A3 9A8
/Parity 25-

Centronics

Dieses parallele Interface, in der DDR auch als „IFSP/M“ bezeichnet, wurde nahezu ausschließlich zum Koppeln von Rechnern mit Druckern verwendet. Die maximale Kabellänge betrug 5 Meter. Rechner mit Centronics-Interface sind z.B. der A7100, A7150, EC1834 und MPC

Anschlussbelegung

LeitungSubD25CanonEFS26EFS39
DA 022A5B5
DA 133A6B6
DA 244A7B7
DA 355A8B8
DA 466A10B9
DA 577A11B10
DA 688A12B11
DA 799A13B12
/STB11B6B2
/ACK1010B7B3
BSY1111B8C11
Paper End1212B9B1
Select1313B10?
/Auto feed1414B11?
ERROR1532B12?
/INIT1631B13?
Masse18-2519-30A9A1,A4,A5,A10-A12,C1,C5