Interfaces User guide128Parallel interface The bidirectional parallel interface offers the so called “nibble” and theECP mode of the IEEE1284 interface standard. This enables installa-tion in accordance with Windows “Plug & Play”.The standard parallel interface is able to transfer data at a speed of max.30,000 bytes per second. When the receiving buffer is full, the data in-put is blocked until the data buffer is empty. This guarantees data trans-mission in blocks of 1 KB.Connector assignment Nibble ModePin Signal In/Out Pin Parallel In/Out1 nSTROBE In 19 Signal GND2 DATA0 In 20 Signal GND3 DATA1 In 21 Signal GND4 DATA2 In 22 Signal GND5 DATA3 In 23 Signal GND6 DATA4 In 24 Signal GND7 DATA5 In 25 Signal GND8 DATA6 In 26 Signal GND9 DATA7 In 27 Signal GND10 nACK Out 28 Signal GND11 BUSY Out 29 Signal GND12 PE Out 30 Signal GND13 SELECT Out 31 nINIT In14 nAUTOFEED Out 32 nERROR Out15 NC 33 Signal GND16 Signal GND 34 NC17 Chassis GND 35 +5V DC Out18 +5V DC Out 36 nSELECT IN In
