Mitsubishi 800 Series User Manual page 87

5. Handling Component Equipment
Modules
MELSEC GOT
Reverse surface
of data link
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@ After the test has been completed, turn off the power supply to
the GOT, and set the various switches on the data link module
to match the system configuration.
This completes the procedure for setting the data link module.
a
Setting the switches on the data link module
This section explains how to set the switches used with the data link module.
(a) Station number setting switch
Since this data link module acts only as a local station, it should be set as follows:
MNET (11): Stations 1 to 64
MNET/B: Stations 1 to 31
(b) Mode change setting switch
Set this to the on-line mode for a data link.
(c) Baud rate switch (MNETB only)
Set this to the baud rate set for the master station.
Precautions when using a data link module
The data link module acts only as a local station, so the station number setting switch
should be set to "0".
Testing the data link connection (self-test)
The self-test checks elements such as the data link hardware and link cable connections.
This test can be selected by setting the mode change setting switch to the third item
shown below.
Switch setting
Contents
Name
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station, and the other as the sub station. Inter-station test mode (sub station)
Intec-statbn test
me
(main station)
The station with the lower number Serves as the main
This mode checks the circuits between two Stations.
This checks the hardware, including sending and
the data link module as a stand-alone module.
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reception circuits in the transmission system, based
01
Self-test
Let's look at how the self-test is carried out.
The self-test checks the hardware of the data link module, including sending and recep-
tion circuits (main loops and auxiliary loops) in the transmission system, based on the data
link unit as a stand-alone module
.
For other testing methods, please refer to the
MELSECNET and MELSECNET/B Data Link System Reference Manuals.
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