Siemens simatic s7 memory card 6es7954 8lc02 0aa0 4 mbyte siemens 6es7954 8lc02 0aa0 p the siemens 6es7954 8lc02 0aa0 is a simatic s7 memory card the 4 mbyte card is ideal for backing up or transferring a program to multiple cpus or to update the firmware of cpus signal modules and communication modules p siemens 6es7954 8lc02 0aa0 simatic s7 memory card 4 mb