PME-MP70DP
20
A0658-7.3 en
HBM
4.4
CAN interface
The CAN Bus is connected via plug terminal 1. A maximum of 32 CAN nodes
can be connected in one bus segment (in accordance with the CANopen
specification). The CAN Bus needs a termination resistor of 120
Ω
in the first
and last bus nodes. The maximum number of termination resistors the bus
line can have is two. A termination resistor is integrated into the MP70DP and
MP70DPS7 modules, and is activated by DIP switch S14 (see page 14).
Low
High
1st device
Fig. 4.4:
CAN interface connection
CAN‐High
CAN‐Low
CAN connection
as per Fig. 4.4
First
device in the bus line
Last
device in
the bus line
Connect the termination resistor in the
Connect the termination
resistor in the PME
Do
not
connect the
termination resistor
MP70DP
MPxx
MPxx
MPxx
Fig. 4.5:
CAN Bus operation with several modules (max. 32, under the standard)
NOTE
If the first or last device in the bus line is not a PME module,
a 120
W
resistor must be connected to each of these external devices.