BECKHOFF ET1200 - Manual (Page 58)

Example Schematics
III-48 Slave Controller – ET1200 Hardware Description
9.5 LVDS termination
The LVDS termination with an impedance of 100 Ω is typically achieved by a resistor R
L
=100 Ω. It is
only necessary for EBUS ports and should be placed adjacent to the EBUS_RX inputs.
EBUS_RX-
EBUS_RX+
R
L
=
1
0
0
R
ET1200
R
L
I+
R
L
I-
V
CC I/O
Figure 29: LVDS termination
9.6 RBIAS resistor
The LVDS RBIAS resistor should have a value of R
BIAS
= 11 kΩ.
1
1
K
RBIAS
ET1200
Figure 30: RBIAS resistor
9.7 Reset Logic
Logic
Core
RESET
W
P
U
ET1200
V
CC I/O
Reset Other
Reset ET1200
Reset
Controller
Reset
ECAT Reset
Reg. 0x0040
Reset In
Reset Out
Optional
Optional
Power
Supervisor
V
CC I/O
V
CC Core
GND
I/O
R
V
CC I/O
Figure 31: Reset Logic