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— 5 —
A +5V Reference voltage is provided on pin 10/ribbon cable BLACK wire for
setting an ON/active level, and a 0V/OFF reference level on pin 9 or the WHITE
wire. DO not draw more than 100mA from the BLACK wire. The SW/SENS
wires on pins 1/BROWN through 8/GRAY are rated for up to +16V maximum
input voltage, but best practice is 0V to 5V operation.
1. The SW1,SW2,SW3,SW4,SW5,SW6,SW7 and SW8 pins will toggle the state
of the same number output when briefly connected to the +5V ON voltage
on the BLACK wire or pin10. If the DS78V is connected to LocoNet this will
occur as a SW# message to make the change and notify the system it has
occurred. Wire to momentary
press-on buttons for SW control.
2. The pins SENS1,SENS2,
SENS3,SENS4,SENS5,SENS6,
SENS7 and SENS8 will send a
LocoNet Block Occupancy or
DS message at the SW# of the
output. This will be BLOCK
OCCUPIED when the line is
above +4V and a BLOCK UN-
OCCUPIED when between 0V/
WHITE and +2V.
3. For example; if the SENS2/YEL-
LOW line of the left ribbon cable
is connected to the BLACK +5V
Reference wire, the the DS num-
ber reported will be SW# used
for Output 2R/2G. If SW10 is
the BASE address of the DS78V,
then Output2 is SW11 and the
DS message will be Block 11
OCCUPIED.
4. A disconnected SENS line will
report as UNOCCUPIED.
5. The BD4N does not plug directly
into a 10 pin header, and will
not operate. Connect the 5
wires used by the BD4N by
name via a terminal strip. More
conveniently, you may connect
the BD4N through one of two
plugged in DSXC4 boards with
ribbon cables for true plug and
play connectivity. This will also allow DSXCP1 SW control and state display.
6. These two sets of ribbon cable wires should not connect to any other voltage
levels or loads other than those defined here.
7. For OPSW11 =C: SW1 line ON starts Route1 and SENS1 starts Route2, in
order through SENS8 line that starts Route 16. An empty route is ignored.
Table 2: DS78V Input lines 1-4
Pin# Wire Color Function
1
BROWN
SW1 Toggle, +momentary
2
RED
SENS1 occupancy level
3
ORANGE
SW2 Toggle, +momentary
4
YELLOW
SENS2 occupancy level
5
GREEN
SW3 Toggle, +momentary
6
BLUE
SENS3 occupancy level
7
VIOLET
SW4 Toggle, +momentary
8
GRAY
SENS4 occupancy level
9
WHITE
0V reference
10
BLACK
+5V reference
Table 3: DS78V Input lines 5-8
Pin# Wire Color Function
1
BROWN
SW5 Toggle, +momentary
2
RED
SENS5 occupancy level
3
ORANGE
SW6 Toggle, +momentary
4
YELLOW
SENS6 occupancy level
5
GREEN
SW7 Toggle, +momentary
6
BLUE
SENS7 occupancy level
7
VIOLET
SW8 Toggle, +momentary
8
GRAY
SENS8 occupancy level
9
WHITE
0V reference
10
BLACK
+5V reference
