PIO-16/16L(PC)VVer.1.30
1
Opto-Isolated Digital I/O Board
PIO-16/16L(PC)V
The PIO-16/16L(PC)V is a 16-channel digital input and
output interface board for the IBM PC/AT and compatible
computers. It can also be installed into a CONTEC I/O
expansion unit. Plugged in an ISA bus expansion slot on the
motherboard of a personal computer, can input and output
up to 16 channels.
Features
Opto-Isolated input/outputs for improved noise resistance
Up to 16 (8 signals x 2 groups) input signals
Up to 16 (8 signals x 2 groups) output signals
Two input signals can also generate interrupt requests.
Output ability: up to 35VDC, 100mA per signal, max.
Function
Input
When installed in a personal computer (PC), these boards
accept up to 16/32 digital signals (in two groups of eight) and
input them to the PC. The PC access the board for input
through four arbitrarily configurable input ports. When the
IN instruction is executed to read data through any of these
input ports, the corresponding buffer gate opens to receive
the group of digital signals from the external device. The
signals sent to the PC at this time have negative logic. The
user can assign two of the 16/32 input signals as interrupts
for the PC. These two signals can then be used as interrupt
request signals.
Output
When installed on a personal computer (PC), these boards
write up to 16/32 digital signals (in two groups of eight) to an
external device. The PC accesses the board for output
through four arbitrarily configurable output ports. When the
OUT instruction is executed to write data to any of these
output ports, the corresponding latch circuit holds the data.
The digital signals are then electrically insulated by the
photocoupler. They are output as a group to an external
device via the transistor. The signals output to the external
device at this time have negative logic. The data in the latch
circuit remains intact until the OUT instruction is executed
again.
Specification
Item Specification
Input
Type Opto-Isolated Input (for current sinking output) (Negative logic)
Resister 3kΩ
Current required to turn ON 3.4mA (Min.)
Current required to turn OFF
0.16mA (Max.)
Number of Channels 16 channels (2 of these 16 can be used as interrupt signal)
(16 channels with the common)
Response time 1ms (Max.)
Output
Type Opto-Isolated Open Collector Output (current sinking type) (Negative logic)
Voltage 35VDC (Max.)Rating
Current 100mA Max. per channel
Number of Channels 16 channels (16 channels with the common)
Response time 1ms (Max.)
Common
I/O address Any 2-byte boundary
Interrupt Two of IRQ 3-7,9-12,14 or 15Interrupt generated at falling edge
External power supply 12 to 24VDC (±15%) 4mA/12V~8mA/24V per input channel
Power consumption 5VDC 50mA (Max.)
Operating condition 0 to 50°C, 20% to 90% (not condensing)
Connecting distance 50m (Typ.) (depending on wiring environment)
Dimension (mm) 163.0(L) x 122.0 (H)
Weight 120g
163.0
[mm]
122.0
