Posted on May 19, 2013June 4, 2013 by adminSiemens / Texas Instruments 6ES57520AA43 REPAIR Siemens / Texas Instruments 6ES57520AA43 INTERFACE MODULE,CP524,RS422 Category: Siemens / Texas Instruments > Siemens > S5 Model #: 6ES57520AA43 Repair Price: GET A QUOTE NOW