Rs-232/485 communication problems, Testing the com port – Parker Hannifin 88-021610-01G User Manual

Page 159

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Parker Hannifin

Chapter 7 Troubleshooting 159

Reconfigure the Drive

To verify proper configuration, you may wish to reconfigure the drive. Pay
particular attention to selecting proper configuration settings for the motor
that you have installed, as motor configuration problems can cause a variety
of errors. Download the new configuration to the drive; the changes take
effect after you send the RESET command or cycle power.

RS-232/485 Communication Problems

If you cannot establish RS-232 or RS-485 communications, the next sections
give instructions for procedures to help isolate problems.

RS-232

RS-485 *

Rx, Tx, Gnd

2-wire plus ground
(Talk+, Talk–, Gnd)

9600 baud

9600 baud

8 data bits

8 data bits

1 stop bit

1 stop bit

No parity

No parity

Full-duplex

Half-duplex

*

Twisted pair cabling recommended

(e.g. Belden 9842)

Table 48 Terminal Emulator Configuration for RS-232/485 Communication

Ensure the RS-232 or RS-485 wiring is connected prior to powering up the
Aries drive. When applying power, the drive will detect either RS-232 or RS-
485 and configure accordingly.

Testing the COM Port

Using the Aries Support Tool, you can test COM port connections.

► Under

Communications

, select the COM port and then click Test.

RS-232 communications might require that you use a null modem cable.
For information about connecting to the COM port, see “Establishing
Communications” on page

74

. Additionally, refer to the pinout diagram

for the RS-232/485 connector, also located on page

74

.

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