Interface
PIN
Signal
Description
Terminal block
removed
Terminal block
inserted
1
CAN_GND
CAN reference potential
2
CAN_L
Bus line, receive/transmit line,
LOW
3
CAN_SHLD
Shield of the bus line
4
CAN_H
Bus line, receive/transmit line,
HIGH
5
NC
Not connected
NOTICE!
Unused connector!
Make sure that the terminal block is always connected to the terminal base or
communication module, even if you do not use the interface.
The maximum possible bus length of a CAN network depends on bit rate (transmission rate)
and cable type. The sum of all bus segments must not exceed the maximum bus length
Bit Rate (speed)
Bus Length
1 Mbit/s
40 m
800 kbit/s
50 m
500 kbit/s
100 m
250 kbit/s
250 m
125 kbit/s
500 m
50 kbit/s
1000 m
Only bus cables with characteristics as recommended in ISO 11898 are to be used. The
requirements for the bus cables depend on the length of the bus segment. See
2.6.4.6 “CANopen field bus” on page 995
.
Both ends of the CAN bus have to be terminated with a 120
Ω
(
≥
1/4 W,
≤
5 %) bus terminating
resistor, to minimize signal reflection. The bus terminating resistor should be connected directly
at the bus connector between the CAN signals (CAN_H and CAN_L). See
“CANopen field bus” on page 995
1.2.1.3
Technical data
The system data of AC500 and S500 are applicable to the standard version.
“System data AC500” on page 971
The system data of AC500-XC are applicable to the XC version.
Only additional details are therefore documented below.
The technical data are also applicable to the XC version.
Pin assignment
Bus length
Types of bus
cables
Bus terminating
resistors
Device specifications
Terminal bases (AC500 standard) > TB56xx for AC500 V3 products
2022/01/31
3ADR010278, 3, en_US
11