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Key System Specifications
1
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Key System Specifications
Table 1. Key System Specifications
PARAMETER
VCC
Iq_SIO
Iq_IOLink
Vdrop
PNP_NPN
SPECIFICATION
VALUE
DETAILS
24 V
Section 3.1.1
Nominal operating current (SIO mode)
5 mA (LEDs OFF)
Section 5.1
Nominal operating current (IO-Link mode
COM3)
7.5 mA (LED OFF)
Section 5.4
< 2.5 V
Section 3.1.1
PNP (NPN settings possible)
Section 3.2
Nominal operating
Voltage drop
Switching output in SIO mode
NO_NC
Switching function
NO (NC settings also possible)
Section 3.2
TA
Temperature range
–40°C to 85°C
Section 3.1.2
Form factor
M12
Section 6.3
Connector
M12
Section 6.1
Reverse protection
Yes
Section 5.3
2
System Description
2.1
System Overview
The system provides a hall-sensor IC, which then can drive the IO-Link through the MSP430. Two LEDs
are on the board: one showing the IO-Link activity and the other one being an image of the Hall sensor
output. The IO-Link offers the capability for the sensor to provide logging information as well as
temperature sensing using the MSP430 on-chip temperature sensor for multi-variable sensing for the
IO-Link master.
2.2
IO-Link
CAUTION
To facilitate a ground-up IO-Link device project, this section provides a quick
overview of the IO-Link interface. This section should, under no condition, be
considered a reference. Only the reference documents should be used after the
initial phase of the project.
IO-Link (1) is a simple and cheap point-to-point protocol (standardized as IEC 61131-9) for the industrial
automation and control applications.
Though the IO-Link clearly states that a master can have several ports, each of which can have a unique
device connected to it, the rest of this document refers to a connection between the master and the device
to avoid a heavy "master-port" naming of a potentially misleading "port" denomination.
(1)
2
IO-Link is a trade name of the IO-Link Community. This information is given for the convenience of users of this international standard
and does not constitute an endorsement by IEC of the trade name holder or any of its products. Compliance to this standard does not
require use of the registered logos for IO-Link. Use of the registered logos for IO-Link requires permission of the IO-Link Community. [1]
Hall-Effect Proximity Sensor With IO-Link™ Design Guide
Copyright © 2015, Texas Instruments Incorporated
TIDU671 – March 2015
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