E20-10
User Manual
Table 6-2. Connector DIGITAL I/O signals
Desig-
nation of
Common
point
Direc-
tion
State after
connection
Description
DI<16...1>
GND
Input
16-bit digital input: DI1-low bit, DI16-high bit,
START and DI16 lines are combined
DO<16...1>
GND
Output
Z-state
16-bit digital output: DO16 – high bit, DO1 – low
bit
GND
-
-
-
Digital land
+5V
GND
Output +4.75...+5.0 V
Power 5V of external circuits. see p.
SYNC
GND
Input-
output
Input-output of ADC synchronization signal (pull-
up resistor is not available)
START
GND
Input-
output
Input-output of data acquisition start signal,
START and DI16 lines are combined. Pull-up
resistor of 4.7 kOhm to circuit of +5 V
+9...+27 V
GND*
Input
Voltage input of +9...+27 V from external power
supply source of 5W. On circuit GND* see in p.
EN_OE
GND
Input
Control input for DO<16...1> line forced setting
mode to active output upon module power feeding
completion, in this case, software control function
is ignored with output enable. To active the mode
it is required to close circuits EN_OE and GND on
cable part of digital signal connectors. If EN_OE
input is unconnected the output enable software
control mode is activated.