6-8
Programming Options
I/O Address Maps
The following four tables (Table 6-1, 6-2, 6-3, and 6-4) show the I/O
address maps for the three models of PIO-SSR Series boards.
Table 6-1. I/O Address Map for a PIO-SSR-24
Base I/O Address
Write
Read
+0h
J1-Port A
J1-Port A
+1h
J1-Port B
J1-Port B
+2h
J1-Port C
J1-Port C
+3h
J1-Control Word
—
+4h
IRQ Control 1
IRQ Status 1
Table 6-2. I/O Address Map for a PIO-SSR-48
Base I/O Address
Write
Read
+0h
J1-Port A
J1-Port A
+1h
J1-Port B
J1-Port B
+2h
J1-Port C
J1-Port C
+3h
J1-Control Word
—
+4h
J2-Port A
J2-Port A
+5h
J2-Port B
J2-Port B
+6h
J2-Port C
J2-Port C
+7h
J2-Control Word
—
+8h
IRQ Control 1
IRQ Status 1
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