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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)

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)

Random/undefined

NOTE (r/w): Process Data RAM is only accessible if EEPROM was correctly loaded (register 0x0110.0 = 1).

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Beckhoff EtherCAT Registers Section II Manual do Utilizador Página 97