Siemens 6ES7134-6PA01-0BU0 Analog Input Module. Siemens 6ES7134-6PA01-0BU0 is the exact manufacturer order number for a analog input module in the SIMATIC ET 200 Distributed I/O portfolio. Siemens describes this exact reference as: SIMATIC ET 200SP, analog input module, AI Energy Meter CT ST, for 1A or 5A current transformer, suitable for BU type U0, channel diagnostics. The verified manufacturer lifecycle record is PM300: Active Product.