If you log on to SP1 using VT100 and you get garbage the port is properly set for CPSS and you will have to use a craft interface to log on talking CPSS to the node. The S1 switch on the control card is to reset the database on the node, but you can also use this to reset the SP1 port back to VT100...be very careful doing the following procedure as you can delete the database. Power down the node and press and hold in S1 then power up the node still pressing in S1, look at the the display it will after going trough it's start up process display a "0" ...release S1 and press S1 again....this will reset your SP1 to VT100 and you will be able to log on again. "0" reset SP1 and if it display a "1" and you carry on you will delete the database. As I warned you the "1" will delete the database, if for some reason you are stuck on "1" just power done the node without pressing S1 and it will restore as previous setting....good luck!!!
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If you log on to SP1 using VT100 and you get garbage the port is properly set for CPSS and you will have to use a craft interface to log on talking CPSS to the node. The S1 switch on the control card is to reset the database on the node, but you can also use this to reset the SP1 port back to VT100...be very careful doing the following procedure as you can delete the database. Power down the node and press and hold in S1 then power up the node still pressing in S1, look at the the display it will after going trough it's start up process display a "0" ...release S1 and press S1 again....this will reset your SP1 to VT100 and you will be able to log on again. "0" reset SP1 and if it display a "1" and you carry on you will delete the database. As I warned you the "1" will delete the database, if for some reason you are stuck on "1" just power done the node without pressing S1 and it will restore as previous setting....good luck!!!