Fujitronic Programmable Operation Display UG520H-x - Manual (Page 54)

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A. Self-loop Test
This is the test menu to check the signals necessary for UG20 to communicate with PLC or a personal
computer by using only POD.
Signal Test of RS-232C in CN1
Select [CN1] and [RS-232C] in [Communication Port] by pressing each switch.
•
Loop-back Test
Check the signals, [SD] and [RD].
1 Jump pins, 2 and 3 of CN1.
2 The test is OK, if the [OK] lamp turns on when the [Self-Loop Test] switch is pressed.
* If the [NG] lamp turns on when the same switch as above is pressed, ask the
advice of your distributor.
•
Test of CTS/RTS
Check the signals, [CTS] and [RTS].
1 Jump pins, 4(RTS) and 5(CTS) of CN1.
2 The test is OK if the [CTS] lamp and the [RTS] lamp turn on at the same time that the [RTS] switch is
pressed. Similarly, the test is OK if the [CTS] turns off at the same time that the [RTS] is turned off.
Self-Loop Test
CTS
NG OK
RTS
Self-Loop Test
CTS
NG OK
RTS
Self-Loop Test
CTS
NG OK
RTS
Self-Loop Test
CTS
NG OK
RTS
Self-Loop Test
CTS
NG OK
RTS
Self-Loop Test
CTS
NG OK
RTS
CN1 RS-232C
MJ1 RS-485
MJ2
Communication Port
17 Operation of POD Main Menu