Sci Interface Connection; Can Connection - maxon motor EPOS2 Module 36/2 Hardware Reference Manual

4.11

SCI Interface Connection

The serial communications interface (SCI) is a two-wire asynchronous serial port, commonly known as a
UART. The SCI modules support digital communication between the CPU and other asynchronous
peripherals that use the standard non-return-to-zero (NRZ) format.
As a common application for EPOS2 Module 36/2's SCI interface, it can be wired to an USB-to-UART
converter to built an USB interface. For further details chapter "5.1.6 USB" on page 5-40.
Max. input voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Bit rate
Data format
Pin
A24
A25
A26
A29
4.12

CAN Connection

The EPOS2 Module 36/2 is specially designed being commanded and controlled via a Controller Area
Network (CAN), an highly efficient data bus, very common in all fields of automation and motion control.
The EPOS2 Module 36/2 is preferably used as a slave node in the CANopen network.
Standard
Max. bit rate
Max. number of CAN nodes
Protocol
Identifier setting
Pin
A30
A31
A32
Note
• Consider CAN Master's maximal baud rate.
• The standard baud rate setting (factory setting) is "Auto Bit Rate".
• Use 120
• For detailed CAN information
maxon motor control
EPOS2 Positioning Controller
EPOS2 Module 36/2 Hardware Reference
Signal
DSP_RTS2
DSP_RxD2
DSP_TxD2
GND
Signal
CAN_L
CAN_H
GND
Ω
termination resistor at both ends of the CAN bus.

separate document «EPOS2 Communication Guide».
Document ID: rel7050
Edition: May 2017
© 2017 maxon motor. Subject to change without prior notice.
3.3 VDC
>2.0 VDC
<0.8 VDC
>2.4 VDC
<0.4 VDC
1 Mbit/s
NRZ (non-return-to-zero)
Description
Serial communication interface handshake
Serial communication interface receive
Serial communication interface transmit
Ground
ISO 11898-2:2003
1 Mbit/s
127
CANopen DS-301 V4.02
by external wiring or software
Description
CAN low bus line
CAN high bus line
Ground
4-33