Device Time Synchronization Method And Connection Specifications - Mitsubishi Electric MELSEC iQ-R Series User Manual

Device time synchronization method and connection
specifications
The following describes the time synchronization method and connection specification references according to the protocol
version 2.0 compatible conditions of the network configuration device.
Protocol version 2.0 only: Devices which support protocol version 2.0 only
With protocol version 1.0: Includes devices which support the protocol version 1.0
None: Works without time synchronization.
Protocol version 2.0/1.0 mixed of
the device station
CC-Link IE TSN CC-Link IE TSN
Class B device Class A device
Protocol version Protocol version
2.0 only 2.0 only
With protocol
version 1.0
Protocol version With protocol
2.0 only version 1.0
With protocol
version 1.0
Precautions
• A device station with the protocol version 1.0 may not perform a data link when the master station is operating with the
protocol version 2.0. If a device station that does not support protocol version 2.0 is detected, that station does not perform
data link, the event code 00C80 is registered in the master station, and the information on stations that do not support
protocol version 2.0 is stored in 'Station protocol version 2.0 support status' (SW01A0 to SW01A7).
• In the system configuration with a mix of the devices that support the protocol version 2.0 and devices that support the
protocol version 1.0, if the device supporting the protocol version 1.0 delays to join the network because the power-on order
or startup time of the device at the system start-up varies, the master station operates with the protocol version 2.0 and the
device supporting the protocol version 1.0 may not perform a data link. (Event code 00C80 is registered in the master
station)
• The operating protocol can be checked with 'Protocol operating status' (Un\G1294016).
• When a device station with the firmware version of "15" or later that supports the protocol version 1.0 does
not perform a data link, if the system needs to operate with the protocol version 1.0 fixed, set the operating
protocol by using buffer memory. ( Page 107 Operating protocol setting) Note that, when 'Protocol
setting' (Un\G1294018) is set to '1: Protocol version 1.0 fixed', the values of the communication cycle
interval and the cyclic transmission time that are stored in 'Communication cycle interval (calculation value)'
(SW0072) and 'Cyclic transmission time (calculation value)' (SW0073) are the values for the operation with
the protocol version 1.0. For this reason, if a device station that supports the protocol version 2.0 also needs
to perform a data link, refer to 'Communication cycle intervals (calculation value)' (Un\G1277444), 'Cyclic
transmission time (calculation value)' (Un\G1277445) and 'Transient transmission time (calculation value)'
(Un\G1277446), and set appropriate values in "Communication Period Interval Setting", "Cyclic
Transmission Time" and "Transient Transmission Time" in "Communication Period Setting" under "Basic
Settings".
APPX
106
Appendix 1 System Configuration with CC-Link IE TSN Class B/A Devices (Protocol Version 2.0/1.0) (RJ71GN11-T2)
Time synchronization method for each device
CC-Link IE TSN Class B device CC-Link IE TSN Class A device
Protocol Protocol
version 2.0 version 1.0

IEEE 802.1AS
IEEE 802.1AS IEEE 802.1AS
IEEE 1588 
IEEE 1588 IEEE 1588
Protocol Protocol
version 2.0 version 1.0

Not available

Not available
Not available IEEE 1588
Not available IEEE 1588
Connection specification
reference
Page 43 Structure with CC-Link
IE TSN Class B/A Devices
Page 109 System Configuration
with CC-Link IE TSN Class B/A
Devices (Protocol Version 1.0
Only) (RJ71GN11-T2)