Mitsubishi Electric MELSEC iQ-R Series User Manual page 109

Setting method
■Operating protocol setting
The operating protocol for the network with a mix of the devices that support the protocol version 2.0 and devices that support
the protocol version 1.0 can be set in 'Protocol information' (Un\G1294016 to Un\G1294031) in the buffer memory. The setting
value is enabled after resetting or after the power is turned off and on, and is held by the RJ71GN11-T2. For details on the
buffer memory, refer to the following.
 MELSEC iQ-R CC-Link IE TSN User's Manual (Application)
1.
Check the protocol currently held by the RJ71GN11-T2 with 'Protocol setting state' (Un\G1294021).
2.
If the protocol needs to be changed, store the setting value in 'Protocol setting' (Un\G1294018), and set 'Write request'
(Un\G1294017) to 1.
3.
Check that 'Write implementation status' (Un\G1294019) is 1 and 'Setting result' (Un\G1294020) is 0. If 'Setting result'
(Un\G1294020) is other than 0, check the error code and set the protocol again.
4.
Reset the CPU modules or power off and on the system.
• The operating protocol settings can be set in firmware version "15" and later of the RJ71GN11-T2.
• The operating protocol is determined during the initialization sequence and stored in 'Protocol operating
status' (Un\G1294016). Also, if the protocol needs to be changed before resetting the CPU module or
turning the power off and on in step 4, change the protocol setting value after changing the write request to
0. After the change, change 'Write request' (Un\G1294017) to 1 again.
• When setting the operating protocol, do so without cables connected before running the system. If the
settings are changed while the system is running, there is a possibility that the link special relay (SB) and
link special register (SW) will temporarily not be updated.
Precautions
• The operating protocol can be checked from 'Protocol operating status' (Un\G1294016).
• When the device station used is set to "CC-Link IE TSN Class A" and "Communication Period Setting" is set to "Low-
Speed", depending on the maximum response time during the time-managed polling method, the communication cycle
interval, and the setting value of low-speed, send/receive of the cyclic data cannot be guaranteed within the period of the
device station set to "Low-Speed" in "Communication Period Setting" and "Low-Speed". In this case, a communication
period setting error (error code: 31ABH) occurs, and the RJ71GN11-T2 stops.
• If there is a device station for which "CC-Link IE TSN Class Setting" is set to "CC-Link IE TSN Class A" and
"Communication Period Setting" is set to "Low-Speed", parameter values for guaranteeing sending/receiving cyclic data
within the "Low-Speed" period to/from the device station with "Communication Period Setting" set to "Low-Speed" are
stored in 'Multiple cycle setting (low speed)' (Un\G1277442) and 'Communication cycle intervals (calculation value)'
(Un\G1277443). Set the "Multiple Period Setting" to "Low-Speed" and "Communication Period Interval Setting" to values
equal to or greater than the values stored in 'Multiple cycle setting (low speed)' (Un\G1277442) and 'Communication cycle
intervals (calculation value)' (Un\G1277443). However, if modules selected in the "CC-Link IE TSN Configuration" window
are all general CC-Link IE TSN modules, the parameter values are not stored in the buffer memory areas.
• If "CC-Link IE TSN Class Setting" of the general CC-Link IE TSN module added to the "CC-Link IE TSN Configuration"
window is set to "CC-Link IE TSN Class A", and "Low-Speed" in "Multiple Period Setting" and "Communication Period
Interval Setting" are set to values of 'Multiple cycle setting (low speed)' (Un\G1277442) and 'Communication cycle intervals
(calculation value)' (Un\G1277443), the cyclic data may not be sent/received. In this case, add the actual device to be used
to the "CC-Link IE TSN Configuration" window or refer to the manual for the device used to check the maximum response
time for the time-managed polling method, calculate and set the communication cycle interval setting.
For details on troubleshooting by symptom, refer to the following.
 MELSEC iQ-R CC-Link IE TSN User's Manual (Application)
Appendix 1 System Configuration with CC-Link IE TSN Class B/A Devices (Protocol Version 2.0/1.0) (RJ71GN11-T2)
A
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