TTControl Vision 307 - Characteristics; CAN Interface; Pinout; Functional Description

6. SPECIFICATION OF INPUTS AND OUTPUTS
6.9.4 Characteristics
Symbol Parameter Min Max Unit
C
out
Pin output capacitance 100 200 pF
V
IL
Input voltage for low level -15 +0.8 V
V
IH
Input voltage for high level +2.7 +15 V
R
pd
Input resistor (to GND) 5 9 kΩ
V
OL
Output voltage for low level -9 -5 V
V
OH
Output voltage for high level +5 +9 V
S
Tr
Data rate 115.2 kBd
6.10 CAN interface
6.10.1 Pinout
Connector Pin no. Note Function
C1 13 1 CAN Interface 0 – High Line
C1 5 1 CAN Interface 0 – Low Line
C1 12 1 CAN Interface 1 – High Line
C1 4 1 CAN Interface 1 – Low Line
C1 11 1, 3 CAN Interface 2 – High Line
C1 3 1, 3 CAN Interface 2 – Low Line
C1 24 1, 2, 3 CAN Interface 3 – High Line – ISOBUS
C1 32 1, 2, 3 CAN Interface 3 – Low Line – ISOBUS
Note 1 According to ISO 11898
Note 2 According to ISO 11783
Note 3 Only available for Vision 307Plus products
6.10.2 Functional description
CAN implements a bidirectional twisted pair bus for high speed serial data transfer up to 1 Mbit/s. The bus
must be terminated with 120 Ω at each end to prevent wave reflection. If the Vision 307 device is connected
at the end of a CAN bus, it is necessary to use external termination resistors, as the device is not equipped
with internal termination. See figure 8 below for details.
Note that a common ground (chassis) or a proper ground connection is necessary for CAN operation. When
connecting with an external device (for example, a PC with CAN interface for downloading software), make
sure that the maximum voltage ratings are not violated when connecting to or disconnecting from the CAN
bus.
The CAN interface is ISO 11898-2/-5 compliant, except for the input resistance. This input resistance is lower
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Document Number:
D-156-G-02-003