Measurement Computing CIO-DUAL-AC5 - Manual (Page 11)

CIO-DUAL-AC5 User's Guide Installing the CIO-DUAL-AC5
11
Connecting the board for I/O operations
Connectors, cables – main I/O connector
The table below lists the board connector, applicable cables, and compatible accessory products.
Board connector, cables, and accessory equipment
Connector type 50-pin header connectors (2)
Compatible cables C50FE-x
C50FF-x
Compatible accessory products with the
C50FE-x SSR-PB24
Compatible accessory products with the
C50FF-x CIO-TERM100
CIO-SPADE50
CIO-MINI50
SCB-50
SCB-100
Pin out – I/O connectors
The CIO-DUAL-AC5 I/O uses two 50-pin header-type connectors. These connectors are board-mounted and
are not accessible on the rear of the PC expansion backplate. The signals available are direct connections to an
82C55 digital I/O integrated circuit.
Figure 2 shows the pin outs for the connectors. The pin assignments for each are identical for each group of 24
pins (three, eight-I/O ports).
 The
front connector (P1) is for first Port A, first Port B, and first Port C I/O lines (at BASE + 0, 1, and 2).
 The
rear connector (P2) is for second Port A, second Port B and second Port C (at BASE + 4, 5, and 6).
Figure 2. I/O connector pin out — P1 and P2 connectors