Table of Contents
Advertisement
6.5
Loop Test
Confirm that the master station and device 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 device 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 device station. This test
is executed when a device station is added or when an abnormal termination occurs at loop test 1.
● Do not set the device station transmission speed to "Auto-tracking" when performing a loop test. Set the device station
transmission speed as the same as that of the master station (156 kbps to 10 Mbps).
An abnormal termination may occur in device stations with transmission speed set to "Auto-tracking" only. In this case,
check the cable connection status and the network line status following the troubleshooting procedure.
● The setting of "Standby Master Station No." in Network Parameter is required to execute Loop test 2 for the standby
master station.
● 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.
CHAPTER 6 INSTALLATION AND CONNECTION
6
67
Advertisement
Table of Contents
Troubleshooting
