If your need very long transmission cables, it is sometimes necessary to replace the regular serial cables with either Optical or LAN based serial ports.įor further information, you should contact your Software dealer. This is useful if you have very long cables. If I set the interface to 1000 the interface shows down/down. If I put the cisco interface speed to 100 my interface links up. I need to make a loopback plug to do a hard loop. A serial booster is a piece of hardware that amplifies the signal on the serial line. I am trying to do some testing through different parts of a circuit connected to a cisco router. Keep the cables as far away from noisy machines as possible. Check your cableĬheck that the cable is properly shielded, and try to shorten or re-route the cable if possible. If you experience problems at 9600 or lower baud rates, you should investigate further. You should not use a baud rate higher than this. The maximum baud rate that did not result in any transmission errors is shown in the Max baud rate field. It is normal for some of the higher baud rates to indicate Failed, especially if you have very long serial cables. If the DTR/DSR field indicates Failed, make sure that these signals are not required by the CNC. If you do not use hardware handshaking, this is not a problem. If the RTS/CTS field indicates Failed, hardware handshaking is not working correctly. If it is, your cable or loopback device is defective or wired incorrectly. If the Rx/Tx field indicates Failed, make sure that the loopback device is attached. is a simple hack to fool the GPU and Windows by let them thinking there is a monitor plugged on a card. When the test is completed, a message box summarizing the result is shown. The test normally takes a couple of minutes to complete, unless a serious problem is detected. Press Start Test to run the loopback test. Select the correct serial COM port from the serial port list. This MTP MPO Loopback is a Fibertronics custom manufactured Male MTP MPO Multimode OM3 50/125µm Loopback tester using a pin configuration of 1 to 12, 2 to 11, 3 to 10, 4 to 9, 5 to 8, and 6 to 7. Go to the Serial Test tab in the server configuration. Attach loopback deviceĭisconnect the CNC, and attach the loopback device to the connector that was previously plugged in to the CNC. do not perform this test on Sundays), since the most frequent cause of transmission errors is electrical noise coming from either the connected CNC or other CNC's close to the serial cable. You should run the test while the entire shop floor is active, (i.e.
For information on how to make a loopback device, please refer to. To perform a loopback test you will net a loopback device. How to perform a loopback test How to perform a loopback test