Mitsubishi L26CPU-BT, User Manual

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6 INSTALLATION AND CONNECTION
6.5 Loop Test
Confirm that the master station and slave stations are correctly connected with the
Ver.1.10 compatible CC-Link dedicated cables and that data linking can be performed.
Loop test 1 checks the status of communication between the master station and all
slave stations connected to the master station. This test is performed during the
system start-up.
Loop test 2 checks the status of communication between the master station and the
specified slave station. This test is executed when a slave station is added or when an
abnormal termination occurs at loop test 1.
POINT
(1) Do not set the slave station transmission speed to "Auto Following" when
performing a loop test. Set the slave station transmission speed as the same as
that of the master station (156 kbps to 10 Mbps).
An abnormal termination may occur in slave stations with transmission speed
set to "Auto Following" only. In this case, check the cable connection status and
the network line status following the troubleshooting procedure.
(2) The setting of "Standby Master Station No." in Network Parameter is required to
execute Loop test 2 for the standby master station.
(3) When data link has started by the standby master station, Loop test 1 and 2 are
not executable. To perform these loop tests, use GX Works2.