NOTE
•
A
t any time, exactly one channel must have logic value 1.
4.4.4 EtherNet/IP
EtherNet/IP™ (EtherNet Industrial Protocol) is an Ethernet-based network used in indus‐
t
rial automation.
EtherNet/IP implements the CIP™ (Common Industrial Protocol) based on the Ethernet
and TCP/IP protocol family.
EtherNet/IP with the CIP Safety™ protocol extension is also suitable for safety-related
data communication.
The connection can also be used for configuration, diagnostics, and data output.
Data output includes measurement data, data on the active monitoring case, and data
relating to field interruptions, for example.
Data output can be used for general monitoring and control tasks. This data is used in
particular for providing navigation support for automated guided vehicles (AGVs). This
data must not be used for safety-related applications.
Information about pin assignment: see "Ethernet for EtherNet/IP – CIP Safety, data out‐
put, configuration, and diagnostics (XF1, XF2)", page 79
4.4.5 Restart interlock
Depending on the regulations which apply at the place of installation, a restart interlock
ma
y be required.
The restart interlock prevents the machine from automatically starting up, for example
after a protective device has responded while the machine is operating or after chang‐
ing the machine’s operating mode.
First, the operator must press a reset pushbutton to return the protective device to
monitoring status. Then, in a second step, the operator can restart the machine.
Depending on applicable national regulations, a restart interlock must be available if it
is possible to stand behind the protective field.
DANGER
H
azard due to lack of effectiveness of the protective device
The dangerous state may not be stopped in the event of non-compliance.
If a protective field is interrupted, the safety output switches to the OFF state for at least
80 ms, even if the interruption is shorter than that time. It is possible that the control
will not detect the OFF state in the event of a very short protective field interruption, e.g.
if the network time expectation
4)
is greater than 80 ms.
The internal restart interlock of the safety laser scanner must be used to end the dan‐
gerous state.
b
If the network time expectation is longer than 80 ms, use the internal restart inter‐
lock of the safety laser scanner.
Reset
T
he reset brings the protective device back to the monitoring state after it has sent a
stop command. The reset also quits the start-up or restart interlock of a protective
device, so that the machine can be restarted in a second step.
4)
T
he network expectation time is sometimes referred to as the connection reaction time limit.
PROJECT PLANNING 4
8020200/15ZT/2019-11-14 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 – EtherNet/IP™
55
Subject to change without notice
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