
Description of functions
Copyright IXXAT Automation GmbH
10
CANio 500 Quickstart Manual, version 1.3
3.2
CAN - LED
The CAN-LED displays the status of the CANopen State Machine (green) and
the error status. In the 'CAN BUS OFF' status, no more communication is pos-
sible and the CAN - LED is permanently lit red.
3.3
USR 1/2 - LED
The User-LEDs (USR 1/2-LED), which can be freely programmed by the user,
can be switched via CAN messages. More information is given in chapters
5.1.4 and
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.
4 Description of functions
4.1
Introduction
The CANio 500 allows monitoring or setting of analog and digital signals via a
CAN network.
4.2
Galvanic isolation
In the case of galvanic isolation, the ground of CAN (GND_CAN) is isolated
from the rest of the circuit.
The ground of the power supply [GND (-)] and of the digital and analog inter-
faces are connected to each other.
4.3
Digital outputs
High-side switches are used for the 4 digital outputs. The digital outputs can
be switched with a CAN message. More information is given in chapter 5.1.4.
The high-side switch can switch up to 34 V. In addition, they offer current limi-
tation, thermal monitoring and surge protection up to
60 V (load dump). They
can also operate with inductive loads. The sum of the currents across all four
outputs should not exceed 1 A. Otherwise current limitation may be triggered.
The high-side switch modules are operated with the voltage VBAT_IN, which
is to be connected on the digital connector (X3). The power supply PWR(+) is
led out again on the connector for the digital interfaces (X3) (VBAT_OUT) and
can then be connected to the pin VBAT_IN via a bridge on connector (X3). If
other voltages are used, the bridge remains open and any voltage between 0
to 34 V can be supplied to the pin VBAT_IN. The pin VBAT_IN is used as a
power input for all 4 digital outputs. If the pin VBAT_IN remains open, the digi-
tal outputs have no function.
The voltage output VBAT_OUT is protected against overcurrent and short-
circuiting via a resettable fuse. If the fuse is triggered in the event of an over-