10. Troubleshooting 55
10.2 Third Party RS232/RS485 Converters
The RS232/RS485 converters range in modes of operation. The provided
Tescom software needs the RS232/RS485 converter to be configured in the
following mode.
Table 5: Third Party RS232/RS485 Converter Mode
Echo off.
Transmitted data, SD, is used for flow control.
No handshake control (RTS/CTS, DSR/DTR).
Additionally, for 4-wire RS422 converters (half duplex).
Connect: +TD to +RD.
Connect: -TD to -RD.
10.3 ER3000 Power-up Test, using LED Indicators
Power up the ER3000 without any Tescom provided software packages running.
Check the LED indicators on the ER3000.
Table 6: LED’s, Power Up
Terminal (Top) Board
LED1, red = ON
LED2, green = OFF
LED3, amber = OFF
Micro (Bottom) Board
LED1, red = BLINKING
If the LED indicators are not as specified in Table 6, refer to Figure 2 to ensure
proper wiring. Check power wiring if the red LED’s are off. Check the RS485
wiring if the amber LED is on. Check to ensure no jumper is on J3 of the micro
(bottom) board if the green LED is on. If not using a Tescom RS485/RS232
converter, refer to Table 5 for proper mode of operation.
If unable to resolve the problem, contact your local distributor. A list of Tescom
distributors may be found on our website, www.tescom.com, or by contacting the
factory.
10.4 ER3000 Data Communications Test, using LED Indi
cators
For Windows
These procedures assume
- You have followed the instructions in Sections 4.4.3 thru 4.4.6 to run the
Windows Tune program.
- You are using a Tescom converter or some other converter that has TxD
& RxD indicator lights. If you are not using a Tescom converter, refer to
Table 5 for proper setup
- The test above, “Power-up Test of the ER3000, using LED Indicators”,
works.
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