Contec DIO-24DY-USB, User Manual

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3. External Connection
20
DIO-24DY-USB
Connector Pin Assignment
CN1
14 --- DGND
13 --- PA00
12 --- PA01
11 --- PA02
10 --- PA03
9 --- PA04
8 --- PA05
7 --- PA06
6 --- PA07
5 --- PC00
4 --- PC01
3 --- PC02
2 --- PC03
1 --- DGND
CN2
DGND --- 1
PB07 --- 2
PB06 --- 3
PB05 --- 4
PB04 --- 5
PB03 --- 6
PB02 --- 7
PB01 --- 8
PB00 --- 9
PC07 --- 10
PC06 --- 11
PC05 --- 12
PC04 --- 13
DGND --- 14
Figure 3.2. Pin Assignment of CN1 Figure 3.3. Pin Assignment of CN2
Table 3.1. Signal name of CN1 and CN2
PA00 - PA07, PB00 - PB07, PC00 - PC07 Digital I/O signals
DGND Common digital ground for digital I/O signals
Relationships between Logical Ports/Bits and Connector Signal
Pins
The following table lists the relationships between the connector signal pins and the logical port/bit
numbers used for I/O functions.
Table 3.2. Logical Ports, Logical Bits, and Connector Signal Pins
D7 D6 D5 D4 D3 D2 D1 D0
I/O Logical Ports0
PA7
[7]
PA6
[6]
PA5
[5]
PA4
[4]
PA3
[3]
PA2
[2]
PA1
[1]
PA0
[0]
I/O Logical Ports 1
PB7
[15]
PB6
[14]
PB5
[13]
PB4
[12]
PB3
[11]
PB2
[10]
PB1
[9]
PB0
[8]
I/O Logical Ports 2
PC7
[23]
PC6
[22]
PC5
[21]
PC4
[20]
PC3
[19]
PC2
[18]
PC1
[17]
PC0
[16]
Note : PAx, PBx, PCx represents an I/O signal of CN1
[xx] represents a logical bits
CAUTION
The logical port and logical bit numbers are virtual port and bit numbers that enable programming
independent of board I/O addresses or board types.