The product in question is Bosch Rexroth Indramat's R911286378 (BTA20.3-NB-LF-KA-BS), a machine control board from the BTA05 series. As a line 20, design 3 model, this board utilizes an NB-LF-KA configuration and communicates through an INTERBUS-S / BT-BUS interface.
Product Type: Machine Control Board Line: 20 Design: 3 Configuration: NB-LF-KA Communication Bus Interface: INTERBUS-S / BT-BUS
BTA 20.3-NB-LF-KA-BS BTA-20.3-NB-LF-KA-BS BTA20-3-NB-LF-KA-BS BTA20.3 NB LF KA BS BTA203NBLFKABS BTA2O.3-NB-LF-KA-BS