User's Manual

E2 Wireless I/O Page 21
to measure voltage on Analog input 4. Set switches ON to measure current on Analog
input 4.
Dipswitch 5 – Factory use only. This switch should be set to ON to enable the hardware
watchdog protection feature.
Dipswitch 6 – When set to ON, the module will boot up with a known factory default
including a default IP address for Ethernet connection. (Refer to section 4.1)
Front panel connections
The E2 front panel provides connections for eight Digital Input /Output (DIO1-8), two
“Floating” 16 bit, 0.1% accuracy differential analog inputs, two single ended 12 bit, 0.1%
accuracy analog inputs, two 15 bit, 0.1% accuracy current sourcing analog outputs and
connection terminals for Common and +24V Analog Loop Supply.
Digital Inputs
Each digital I/O channel on the E2 can act as either an input or an output. The
input/output direction is automatically determined by the connections and configuration
of the I/O.
If you have an I/O channel wired as an
input but operate the channel as an
output. No electrical damage will occur
however, the I/O system will not operate
correctly.
If operating the channel as an output
and performing a “read inputs” on this
location it will indicate the status of the
output.
Digital inputs signals share the same
terminals as the Digital output signals,
marked DIO1-8 on the E2 module.
A digital input is activated by connecting
the input terminal to EARTH or
Common, either by voltage-free contact
or by a transistor switch.
Voltage Free Contact
Transistor
Switch Device
V+
V+
V-
DIO1
DIO2
Common
E2 Module Inputs
Discrete Input / Output Used as input