When the COMM lamp of the master station is OFF (SD, RD, and CD are flickering).
Check the following master station's parameters.
Parameter address(8) | Contents | Setting |
value | ||
004002 | Function (relay/register link) | 01(H) |
|
|
|
007777 | Start/stop operation of the | 01(H) |
|
|
|
Other cases
-Check the switches of the
-Check optional cable of PC (The
-Check cable and connector (see check item)
-Check error code
[Switches required check in the
①Station number (STA NO.)
② Mode switch (MODE)
③ Termination resistance switch (LT)
④ Shield ground switch (LG)
If there are errors in the station number and the mode switch, change the setting with the power OFF, and then turn ON the power.
[Check items of cables and connectors]
①No looseness or removal of connectors (turn the connector right until it completely locks).
② Connectors are appropriately fixed on the cables (When any faults such as extrusion of pins or connector being easily removed by pulling, reinstall these connectors.)
③ Wiring conditions are appropriate (See chapters 6 and 7).
④ Not too long branch lines (shorter than 400 mm).
⑤ Termination resistance are correctly connected.
(Turn "ON" the termination resistance switch of the end stations or install a termination tool.)
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