Measurement Computing PPIO-DIO24H - Manual (Page 8)

The voltages and currents associated with external devices range from less than a
hundred mA at a few volts for a small flash light bulb to 50 Amps at 220 volts for a
large electric range. Attempting to connect either of these devices directly to the
PPIO-DIO24H would destroy the I/O chip. In these cases, external relays must be
used.
3.4 CONNECTOR DIAGRAM
The PPIO-DIO24H field I/O connector is a
37-pin, D-type connector accessible through
the top cover of the PPIO (Figure 3-2).
The connector accepts female 37-pin, D-type
connectors, such as those on the C37FF-2, a 2
foot cable with connectors.
If frequent changes to signal connections or
signal conditioning is required, please refer to
the information on the CIO-TERMINAL and
CIO-MINI37 screw terminal boards. Contact
Customer Support for assistance in this
important area.
Figure 3-2. I/O Connector
4
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
GND
+5V
GND
+5V
GND
NC
GND
NC
GND
NC
GND
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
NC
NC
J1