The FX30E/FX60E includes an on-board SRAM and associated circuitry, allowing battery-less operation. A separate SRAM option card is not needed (or supported) in an FX30E/FX60E controller.
The default station backup configuration is to use SRAM, via the platform DataRecoveryService, which is automatically created in the FX30E/FX60E’s running station. However, in some cases, a station may be a poor candidate for SRAM support, requiring too many resources by the associated platform service (for example, a station with many rapidly changing values all captured as histories, on change of value). In this case, you may need to disable SRAM support, and install and use only the optionally included NiMH battery pack.