Setyo Suhartanto wrote:
>
>
> Jadi inget temen yg sampai skr masih butuh port COM buat programming PLC.
> Buat dia, laptop IBM jadul-nya masih terbaik karena sangat jarang laptop
> jaman skr yg masih menyediakan port COM.
> Apalagi bawaan hardware PLC-nya harus native COM, gak bisa pake converter
> lewat USB :)
Real RS-232 with transmitter using +12V and -12V. Sementara USB to
RS-232 use transmitters that supplied +5V and -5V.
Saya sih pakai PCMCIA card yang kasih 2 x RS-232. Hanya sayangnya
drivernya cuman buat Win95/98 :(
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Bhishma to Yudhisthira at Kurukshetra
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