5
2. Main Menu Screen 5-33
TS Series Operations
COM3: RS-485 Signal Test
SD/RD Test
Check the signals [SD] and [RD]. Be sure that no problem is found in “COM1: RS-485 Signal Test”
(page 5-30) beforehand.
1. Set DIP switch Nos. 2 and 3 to ON.
* Turn the power off when setting DIP switches.
2. On the TS series, connect pin 1 of COM1 with pin 6 of COM3, and pin 2 of COM1 with pin 1 of
COM 3.
3. Press the [COM3] switch in the [Communication Port] field. The [RS485] lamp lights up.
4. Press the [Self-Loop Test] switch. When the [OK] lamp lights up, the test is successfully
completed.
* If the [NG] lamp lights up, a pin may be faulty. Contact your local distributor.
-RD
+RD 1
2
Name No.
+SD/RD
-SD/RD 1
6
Name No.
COM1 COM3
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