You can use a null-modem adapter to change Turn off hardwareĭTE anc DCE ports, use a null modem cable instead of a straight cable. Set theĭefault serial communications format. Use a straight-through cable to the main control port. What's wrong?Ĭheck three things: pinout, baud rate, and No targets connected, I can't access the switch menu. Inadvertently connect transmit to transmit (TXD-TXD) or receive to receiveĭata is blocked and you can't see the menu. Ports use different pins for transmit and receive data. Port is DTE and the switched ports are DCE. The serial switch as having a built-in cross-over. Swap pins 2 and 3 (transmit and receive data). Have two DTE or DCE devices connected together. The SS20 doesn't use or transmit flow control or handshaking. If you can't youĬontrol or hardware handshaking may be enabled. If you can, then the SS20 is behaving properly.
You develop custom firmware for my application?Ĭan you develop custom hardware for my application? Inaccessible after I connect a target device.
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