The card readers have a serial RS-232 (V. 24) interface. The standard settings are as follows:
Active modus (ASC):
Transmission is in the form of serial ASCII characters.
Encryption mode (CRYPT):
Transmission is byte-oriented, where individual bytes are transmitted in encrypted form.
In order to decrypt the bytes in the ET-2x8 or ET/MT-3x6 a special driver (name="Card Reader") is needed. From SPSPlusWIN version 5.01.22 it will be part of the standard delivery.