
EPC-9 Hardware Reference
3
3
3-28
Option Byte 1
This option is used to select the first option byte value for the EXM card intended to
reside in this slot. Option byte 1 typically defines bit 0 as the card enable bit. Other
bits in the option byte are defined by the particular EXM card installed. The proper
value of this option for a slot with no EXM card installed is not defined. The value
typically used is 00h, the default value.
Option Byte 2
This option is used to select the second option byte value for the EXM card intended
to reside in this slot. Option byte 2 is defined by the particular EXM card installed.
The proper value of this option for a slot with no EXM card installed is not defined.
The value typically used is 00h, the default value.
NOTE: Since the EPC-9 uses existing EXM backplanes, the first 2 slots will be
covered by the PMC card(s). To compensate for this, EXM slot 0 and slot 1
are non-editable.
C
P
U
0
1
2
4
3
5
Figure 3-13. Slot Numbering.
All slots not occupied by an EXM module should show an ID of FF and OB1/OB2 of
00 00 indicating that no EXM is present.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com