BECKHOFF EtherCAT Registers Section II - Manual (Page 97)

Process Data RAM (0x1000:0xFFFF)
Slave Controller – Register Description II-85
4 Process Data RAM (0x1000:0xFFFF)
4.1 PDI Digital I/O Input Data (0x1000:0x1003)
Digital I/O Input Data is written into the Process Data RAM by the Digital I/O PDI.
Table 140: Digital I/O Input Data (0x1000:0x1003)
ESC20 ET1100 ET1200 IP Core
Bit Description ECAT PDI Reset Value
31:0 Input Data (r/w) (r/w) Random/undefined
NOTE (r/w): Process Data RAM is only accessible if EEPROM was correctly loaded (register 0x0110.0 = 1).
NOTE: Input Data size depends on PDI setting and/or device configuration. Digital I/O Input Data is written into
the Process Data RAM at these addresses if a Digital I/O PDI with inputs is configured.
4.2 Process Data RAM (0x1000:0xFFFF)
The Process Data RAM starts at address 0x1000, its size depends on the ESC.
Table 141: Process Data RAM (0x1000:0xFFFF)
ESC20 ET1100 ET1200 IP Core
4 KB 8 KB 1 KB config.
Bit Description ECAT PDI Reset Value
Process Data RAM (r/w) (r/w) Random/undefined
NOTE (r/w): Process Data RAM is only accessible if EEPROM was correctly loaded (register 0x0110.0 = 1).