Dnf-controls Analyst, RS422/RS232 Tester With (LOG 1) SR Data L Manuel d'utilisateur télécharger pdf (Page 13)

The Analyst RS422/RS232 Tester Page 9 of 27

SENDER/RECEIVER Mode Troubleshooting Tips

Received Test Message What it means

Receive readable test message with

Receiver’s ID added.

Confirms that receive circuit from RECEIVER to

SENDER is working.

Also confirms that message received was same as

message sent. Positive proof that both ends of the

cable are connected to the same cable. Eliminates

the possibility of crossed cables.

Receive ID from RECEIVER is readable

but the original test message is

unreadable.

The receive circuit is working.

The transmit circuit may be reversed.

Press the [Tx+] key to reverse the transmit lines

(RS422).

If the original test message is now readable, the

transmit lines are reversed.

Receive unreadable test message. The receive circuit may be working.

Press the [Rx+] key on the SENDER to check for

reversed receive lines (RS422).

If received test message is now readable, the

received lines are reversed.

If the received test message contains the original

test message, the transmit circuit is working.

No received test message. The receive circuit is not working.

Press the [RxTx] key on the SENDER to swap the

transmit and receive circuits.

If a test message is received, the transmit and

receive lines are swapped.

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Dnf-controls Analyst, RS422/RS232 Tester With (LOG 1) SR Data L Manuel d'utilisateur Page 13