BECKHOFF EtherCAT Registers Section II - Manual (Page 43)

PDI Configuration (0x0150:0x0153)
Slave Controller – Register Description II-31
3.28.3 PDI 8/16Bit asynchronous Microcontroller configuration
Table 37: Register PDI asynchronous Microcontroller Configuration (0x0150)
ESC20 ET1100 ET1200 IP Core
[7:4]
Bit Description ECAT PDI Reset Value
1:0 BUSY output driver/polarity:
00: Push-Pull active low
01: Open Drain (active low)
10: Push-Pull active high
11: Open Source (active high)
NOTE: Push-Pull: no CS → not BUSY (driven)
Open Drain/Source: no CS →
BUSY open
r/- r/- IP Core: Depends on
configuration
Others: 0, later
EEPROM ADR 0x0001
3:2 IRQ output driver/polarity:
00: Push-Pull active low
01: Open Drain (active low)
10: Push-Pull active high
11: Open Source (active high) r/- r/-
4 BHE/Byte Enable polarity:
0:
Active low
1: Active high
r/- r/- IP Core: 0
Others: 0, later
EEPROM ADR 0x0001
5 Reserved, set EEPROM value 0 r/- r/-
6 Reserved, set EEPROM value 0 r/- r/-
7 RD Polarity:
0:
Active low
1: Active high
r/- r/-
Table Register Sync/Latch[1:0] PDI Configuration (0x0151) moved to chapter 3.28.7
Table 38: Register PDI Asynchronous Microcontroller extended Configuration (0x0152:0x0153)
ESC20 ET1100 ET1200 IP Core
[15:1] [0]
V2.2.0/
V2.02a
[1]
V2.3.0/
V2.03a
Bit Description ECAT PDI Reset Value
0 Read BUSY delay:
0:
Normal read BUSY output
1: Delayed read BUSY output
r/- r/- IP Core: 0
Others: 0, later
EEPROM ADR 0x0003
1 Perform internal write at:
0:
End of write access
1: Beginning of write access
r/- r/-
15:2 Reserved, set EEPROM value 0 r/- r/-