88 eCobra User's Guide 14402-000 Rev. F
5.5 Connecting Digital I/O to the System
XIO Input Specifications
Table 5-7. XIO Input Specifications
Operational voltage range 0 to 30 VDC
OFF state voltage range 0 to 3 VDC
ON state voltage range 10 to 30 VDC
Typical threshold voltage V
in
= 8 VDC
Operational current range 0 to 7.5 mA
OFF state current range 0 to 0.5 mA
ON state current range 2.5 to 7.5 mA
Typical threshold current 2.0 mA
Impedance (V
in
/I
in
) 3.9 K Ω minimum
Current at V
in
= +24 VDC I
in
≤ 6 mA
Turn on response time (hardware)
Software scan rate/response time
5 µsec maximum
16 ms scan cycle/
32 ms max response time
Turn off response time (hardware)
Software scan rate/response time
5 µsec maximum
16 ms scan cycle/
32 ms max response time
NOTE: The input current specifications are provided for reference. Voltage
sources are typically used to drive the inputs.