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General Discussions / BLACK BOX PLC - a ghost device
« on: November 16, 2005, 03:14:27 AM »
I have a ghost device, a PLC of, i think, italian origin and a bit outdated (1997/98 or 99). It is a 9 card system with standard following layout :
-Power supply,
-cpu board with a sticker (052m04 - something of a serial part but i`m not sure),
-graphicd card/keyboard connected to a "vdm 2000" crt monochrome display (part number/code - 056m)
and a some input output cards(0271m01, 087m01, 079m01 etc.).
The cpu board has a zilog z84c 0008 processor paired with a z84c 4008 I/O and a z84c 3008 4-channel timer/counter, with a main program (i believe) stored in a m27c256 - 12f1 EPROM.
It also has a smaller board on top with two SRAM 32 Kb chips, and a few peripherals pinned about...
The mark on the rack says SRM 330
I`ve been browsing the net for the past 2 weeks every single day and wasn`t able to dig out anything - which i find to be most peculiar.
Any thoughts or suggestions are most welcome and i`d really appreciate your help on this one.
Koniaris
-Power supply,
-cpu board with a sticker (052m04 - something of a serial part but i`m not sure),
-graphicd card/keyboard connected to a "vdm 2000" crt monochrome display (part number/code - 056m)
and a some input output cards(0271m01, 087m01, 079m01 etc.).
The cpu board has a zilog z84c 0008 processor paired with a z84c 4008 I/O and a z84c 3008 4-channel timer/counter, with a main program (i believe) stored in a m27c256 - 12f1 EPROM.
It also has a smaller board on top with two SRAM 32 Kb chips, and a few peripherals pinned about...
The mark on the rack says SRM 330
I`ve been browsing the net for the past 2 weeks every single day and wasn`t able to dig out anything - which i find to be most peculiar.
Any thoughts or suggestions are most welcome and i`d really appreciate your help on this one.
Koniaris