turck BL20-PG-EN-V3, User Manual, Page: 6 / 78

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V01.0| 2016/04
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1 About this manual
1.1 Documentation concept
This manual describes the hardware and the functions of the CODESYS V3-programmable gateways
for the Turck product families BL20 and BL67 (BL20-PG-EN-V3 and BL67-PG-EN-V3).
The following chapters contain:
 the hardware description of BLxx-PG-EN-V3,
 the description of the device functionalities (master/device),
 the description of the Modbus-master, page 46
 examples for the connection of the BLxx-PG-EN-V3 as device (slave)
– Modbus TCP Slave Device, page 49
– PROFINET IO-Device, page 51
– EtherNet/IP™-Device, page 56
1.1.1 Additional documentation
Please read the following product family manuals for any general product line specific issues e.g.
system description, mounting, electrical installation, station configuration etc.
BL20:
 D300717 „BL20 I/O modules - hardware and engineering“
BL67:
 D300529 „BL67 I/O modules - hardware and engineering“
1.2 Explanation of symbols used
1.2.1 Warnings
Action-related warnings are placed next to potentially dangerous work steps and are marked by
graphic symbols. Each warning is initiated by a warning sign and a signal word that expresses the
gravity of the danger. The warnings have absolutely to be observed:
DANGER!
DANGER indicates an immediately dangerous situation, with high risk, the death or severe
injury, if not avoided.
WARNING!
WARNING indicates a potentially dangerous situation with medium risk, the death or
severe injury, if not avoided.
CAUTION!
CAUTION indicates a potentially dangerous situation with low risk, middle or low injury, if
not avoided.