
3. General
The board IO 1388 was designed to interface with the PCs internal PCI-BUS
through any available expansion slot. Ther are 2 different models available:
• model IO 1388 / 0 - supplied with 16 / 16 input / output channels
• model IO 1388 / 1 - supplied with 32 /32 input / output channels
All input and output channels are optically isolated. In addition input and output
voltage levels of 24 V are also available. By this reason all input and output
channels can directly connected to a PLC.
Theoutput channelsareshortcircuitprotected.Eachchannelcanswitchcurrents
up to 1 A.
A watchdog is implemented. In a programmable register a distinct output channel
masc configuration can be programmed. If the watchdog timeout time is over, the
output channels are set to the predetermined state.
By an interrupt-enable-register the input channels can be programmed to gene-
rate interrupts. The interrupts can be generated by a positive-edge or a negati-
ve-edge trigger.
In addition there is a timer implemented. The timer e. g. can be used for reading
input channels in distinct intervals.
4. Function
The IO 1388 will use one PCI-slot within the pc. Because the PCI-bus supports
plugandplay,there arenojumpersorswitches tochangeconfiguration.Thecard
will use 8 x 32-bit-IO-addresses for the functions and 16 x 32-bit-IO-adresses for
the PCI-target-controller. You can use any number of IO 1388 within one pc
(depends on number of PCI-slots). The standard drivers supports up to 4 cards.
If more than 4 cards should be used, you can ask for a driver for more cards. The
card has one 37-pin SUB-D male connector for the input and output channels.
The functions of the card will be handled in a FPGA. This free
programabledevicemakesitpossibletosupportcustomerspecific
functions without changing the hardware. It is possible to imple-
ment additional special functions or fast controllers within the
FPGA.
3. General
ERMA-Electronic GmbH 6