Mitsubishi Electric MELSEC-Q Series User Manual page 89

(2) Using the transmission speed/mode setting switch on the master/local module
There are two types of line tests: line test 1 and line test 2. First, a line test 1 is executed. If the line test 1 is
abnormally ended, a line test 2 is executed.
Line test 1
Line test 2
● A line test can be executed when a CC-Link dedicated cable is connected and the station number and transmission
speed are set in a slave station. No parameter setting is required in the master/local module.
However, to execute a line test 2 for a standby master station, the parameter setting is required in the standby master
station.
● When the data link start function is used, execute a line test using a programming tool. (
(a) Line test 1
Universal model
Example
QCPU
Item
To check the status of communications with all the modules connected.
If the test is abnormally ended, the faulty station is identified in a line test 2.
To check the status of communications with a specific slave station
High Performance model
Example
QCPU
CHAPTER 6 INSTALLATION AND WIRING
Description
1.
Before the line test 1, check the following:
• If the switch on the CPU module is set at STOP
• If the switch on the CPU module is not set at RESET
• If all the stations are connected with CC-Link
dedicated cables
2.
Set the station number setting switches on the
master station to 0.
3.
Set the transmission speed/mode setting switch on
the master station from 5 to 9.
When setting the switch from 5 to 9, set the same
transmission speed as that of during system operation.
( Page 21, CHAPTER 2)
4.
Reset the CPU module or power off and on the
system.
Page 86, Section 6.5.1 (1))
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