Wheatstone E-SAT, Technical Manual

Page: 13 / 126

G E N E R A L I N F O R M A T I O N
page 1 – 6
E-Series Network / Apr 2007
Logic Connections
Input Ports
If a logic port is configured as an input (see settings for SW7
and SW8), the logic common setting for that port (SW4 and
SW5) must be Common Plus. A simple closure between the
logic port pin and GROUND (pin 1) is then all that is required
to activate the input port.
Output Ports
If a logic port is configured as an output (see settings for
SW7 and SW8), then the logic common setting for that port
(SW4 and SW5) can be Common Plus or Common Ground, depending on the
application. The logic port is configured as a FET output, with one side of the
FET connected to the logic port pin and other side of the FET connected to
GROUND (Common Ground, for an active low output) or 5V through an
internal pullup resistor (Common Plus, for an active high output). Activating
the logic output port simply creates a closure between the logic port pin and
GROUND (Common Ground) or +5V (Common Plus).
“LOGIC” C
ONNECTOR
Pin 1 – GROUND
Pin 2 – LOGIC PORT 1
Pin 3 – LOGIC PORT 2
Pin 4 – LOGIC PORT 3
Pin 5 – LOGIC PORT 4
Pin 6 – LOGIC PORT 5
Pin 7 – LOGIC PORT 6
Pin 8 – +5V
page 1 – 5a
EXT
+5V
MCS-8
SIMPLE INPUT EXAMPLE
INPUT PORT
SWITCH
+5V
N/C
PORT
GND
E-Series Network / Nov 2008