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6
2. Main Menu Screen 6-9
POD Operations
RS-422 signal test
1. Slide the slide switch on the POD to the lower position for RS-422.
2. Turn on the [MJ2] and [RS485] switches under [Communication Port].
3. Check the signals [+RD], [−RD], [+SD] and [− SD]. Wire inside MJ2 as shown below.
4. Press the [Self-Loop Test] switch. When the [OK] lamp lights up, the test is successfully
completed.
* If the [NG] lamp lights up, consult your local distributor.
MJ1 Test
RS-232C signal test
1. Turn on the [MJ1] and [RS232C] switches under [Communication Port].
2. Check the signals [RD] and [SD]. Wire inside MJ1 as shown below.
RS232C
RS485
Communication Port
CN1
MJ1
MJ2
Signal
Name
Pin No.
+SD 1
−SD 2
+RD 7
−RD 8
MJ2
Self-Loop
Test
CTS RTS
NG OK
CTS RTS
NG OK
Self-Loop
Test
CN1
MJ1
MJ2
RS232C
RS485
Communication Port
Signal
Name
Pin No.
RD 7
SD 8
MJ1