Chapter 4: Operation Table 4-10. DIO Input Circuit Specifications (XDIO connector) 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 maximum latency for the fast inputs when used with the eV+ INT.EVENT instruction. In the following figure, example 1 shows inputs (1001 to 1004) with a negative common, example 2 shows inputs (1005 to 1008) with a positive common, and example 3 shows inputs (1009 to 1012) with an independent power supply (no common). NOTE: These are examples. Either method can be used on any channel.
SmartController EX User’s Guide, 11069-000 Rev. F Page 42 of 92 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 = 8 VDC in 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 /I ) in in 3.9 K Ωminimum Current at V = +24 VDC in I ≤ 6 mA in 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