314
APPX
Appendix 7 Processing Time
Monitoring time for safety communications
This section describes the monitoring time for the safety communications.
The monitoring time is set for each safety connection. If the time exceeds the monitoring time, a safety communication
timeout is detected and the safety communications are stopped.
*1 The safety refresh monitoring time uses a common value between the master station and slave stations.
Setting
station
Item
Description
Station using
setting time
Master
station
Transmission Interval
Monitoring Time
• A slave station monitors the transmission interval
that the master station sends
safety data.
• The master station sends data to the slave station at the start of the safety
communications.
• The safety data includes the information of the time at which the data was sent.
The slave station monitors the transmission interval by comparing the time
information with the previous time information.
Slave station
Safety Refresh Monitoring
Time
The master station monitors the receiving interval
that safety data received from a
slave station.
Master station
• A slave station monitors the receiving interval
that safety data received from the
master station.
• The master station sends data to the slave station at the start of the safety
communications.
Slave station
Slave station
Transmission Interval
Monitoring Time
• The master station monitors the transmission interval
that a slave station sends
safety data.
• A slave station sends data to the master station at starting the safety
communications.
• The transmission time information with safety data received on the master station
is monitored as compared with the last value.
Master station
(1) Safety data sent from the master station to a slave station
(2) Safety data sent from a slave station to the master station
to
: Transmission/receiving intervals of safety data
Ò
Ó
Ô
Õ
(1)
(2)
Master station
Slave station
Summary of Contents for MELSEC iQ-R CC-Link IE TSN
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