User guide

2706-UM001A-US-P
7-2 Using the Parallel Port
Parallel Port Connections (TB1)
• Terminals D0 through D15 are for message number and data input.
• Terminal PD is for the enabling or disabling of the parallel port. If PD is
tied high, the port is disabled and the DL5 will ignore data on data lines
D0-D15. If PD is low, the port is enabled and the DL5 will read and
respond to data on data lines D0-D15. As long as PD is controlled
separately, using PD will allow multiple DL5’s to be connected to one
set of outputs (multiplexed).
• The input voltages for terminals D0 through D15 and PD can vary from
5 to 24 volts DC. The figure below shows a circuit diagram of an input
terminal.
Parallel Port Input Circuit
Parallel Port
1
2
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 PD
TB1TB2
1
2
RS-232
SW1
PARALLEL PORT 5-24 VDC INPUT
TB2
1 COM
SW1
2 12-24V DC Input
1 Serial Trigger / Configure
2 Not Used
+5 VDC
LATCH
Latch Closes When the
”PD” Terminal On the
DL5 Parallel Port Is
Open or Low
3.3K
100K
3.3K
COM
DATA
D0-D15