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7. Extension I/O Board - Optional
7.1 Extension I/O Board
Mount the extension I/O board on the ISA slot in the Control Unit when extra I/Os are
desired.
One additional I/O board extends by 32 pins each for input and output. The I/Os can be
extended up to 464 each for input and output respectively (including those for Remote
I/O). However, this number is subject to the number of ISA slots available on a type of
PC used as control unit
The I/O #0 through #47 are reserved for the three drive units, DU1 through DU3.
The input and output bit #s are assigned as follows. For the Extension I/O boards, the
I/O Bit #s start with #48.
The types of the optional extension I/O board are listed below.
Protected Extension
I/O board
Protected Extension
I/O board
Extension I/O board
Function
7.1 Extension I/O Board (Extension I/O Board – Optional)
Input Bit #
0 to 15
16 to 31
32 to 47
48 to 79
80 to 111
. .
.
Input/Output
Name
Type
NPN
PNP
NPN
Output Bit #
0 to 15
Standard drive unit
16 to 31
Additional drive unit (DU2)
32 to 47
Additional drive unit (DU3)
48 to 79
The 1st extension I/O board
80 to 111
The 2nd extension I/O board
. .
.
Output Circuit
Hybrid IC SEP007
Hybrid IC SEP008
Transistor array and photo
coupler
Applicable Hardware
(DU1)
. .
.
The standard for:
-
Europe
the regions outside
Europe
55
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