25-Seven Systems program delay manager, Руководство оператора

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25-Seven Program Delay Manager Version 2.3 Manual April 2013 53
Always use Bypass mode when installing software updates. You can trigger this mode
with the front panel
BYPASS
button or the web interface.
GPIO
Eight parallel control inputs and eight parallel control outputs appear on the female
DB-25 connector, with pinouts detailed below. Input and output functions are assigned
through the
GPIO
menu.
Inputs and outputs are opto-isolated for easy interface to other equipment. A +5v sup-
ply and ground are also brought out to the DB-25 for simple remote controls using
pushbuttons and LED status readouts. Output pulse length is 250ms
1 .
The +5v supply can provide 200 mA, more than adequate for 8 LEDs and 8 logic inputs.
Total draw should not exceed this value. This supply is protected by an internal, self-
resetting thermal circuit breaker. If this breaker should trip, power off and allow several
minutes for it to reset.
Basic remote control
1) Use the connections shown on the left side of the schematic below. At the DB-25,
jump pin 13 (input common) to pin 8 (+5v).
2) Connect one side of an SPST NO pushbutton to pin 20 (ground); connect the other
side to pin 25 (Input 1).
3) Add up to 7 more pushbuttons as needed, connecting one side of all to pin 13 as
common, and connecting their other sides to the individual inputs in the chart be-
low.
Typical PDM remote input (left) and output (right) circuits. Use the jumpers shown in gray for simple
pushbutton / LED remote. Or use just the opto-isolator connections without pins 8 and 20 for interface to
other equipment. DB-25 pinouts shown in bold.
*
indicates individual DB-25 pins for separate GPIO in-
puts and outputs; see chart below.
1
Other pulse lengths may be available; contact customer support.