Omron SmartController EX - Page 46

46 SmartController EX User's Guide 11069-000 Rev. H
4.6 Connecting User-Supplied Digital I/O Equipment
Table 4-12. Digital I/O Input Circuit Specifications (XDIO connector)
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
1 ms scan cycle/
1 ms max response time
Turn-off response time (hardware)
Software scan rate / response time
5 µsec maximum
1 ms scan cycle/
1 ms max response time
NOTE: The input current specifications are provided for reference; voltage
sources are typically used to drive the inputs.
NOTE: When the program task priorities are properly set, there is a 1ms max-
imum latency for the fast inputs when used with the eV+ INT.EVENT instruc-
tion.
The following figure shows inputs 1001 to 1004 with a negative common, inputs 1005 to 1008
with a positive common, and inputs 1009 to 1012 with independent power supply con-
nections (no common).
NOTE: These are examples. Either method can be used on any channel.