AS-Interface Master for S7-200 Backplane
The Siemens 6GK7243-2AX01-0XA0 is an AS-Interface Master module that sits on the S7-200 backplane bus, providing a gateway for up to 62 AS-Interface slaves with galvanic isolation at 500 V. Powered from the backplane bus, it draws up to 220 mA, adding 3.7 W to the CPU power budget. A maximum of two modules per CPU is allowed.
Scan Performance and Diagnostics
Six front-panel LEDs — PWR, APF, CER, AUP, CM, SF — give immediate read on bus health and communication errors, making commission and fault-finding straightforward without a programming tool.
Panel Fit and Mounting
Occupies a standard 71 x 80 x 62 mm envelope with IP20 protection. Snaps onto 35 mm DIN rail or can be screw-fastened using an additional push-in lug — useful when retrofitting into an existing panel where DIN rail is already dense.