Mounting and bus fit
The 6ES7135-6GB00-0BA1: The module is 15 mm wide, 73 mm tall, 58 mm deep — the standard ET 200SP slice footprint. It snaps onto a BU type A0 or A1 base unit; if you already have that base in the rail, the mechanical coding element prevents misplugging. No isochronous mode, no MSO support, so skip this one if you need time-synchronised output update.
Signal and diagnostics detail
For a resistive load, the settling time is 0.1 ms typical; for an inductive load it stretches to 0.5 ms. The module draws 1.5 W typical from the backplane, max 110 mA at 24 V DC. On the output side you get 30 V available, and the maximum series resistance with current outputs is 500 Ω. The isolation test is done at 707 V DC type test. There is a green channel status LED per output and a green/red DIAG LED for module diagnostics. If you need FW updates, those are supported and the hardware functional status starts at FS03.