adept technology SmartController EX User Manual page 45

Table 3-10. DIO Input Circuit Specifications (XDIO connector)
Operational voltage range
"Off" state voltage range
"On" state voltage range
Typical threshold voltage
Operational current range
"Off" state current range
"On" state current range
Typical threshold current
Impedance (V
in
Current at V = +24 VDC
in
Turn-on response time (hardware)
Software scan rate/response time
Turn-off response time (hardware)
Software scan rate/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 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, exam-
ple 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.
Adept SmartController EX User's Guide, Rev.C
Chapter 3: Operation
0 to 30 VDC
0 to 3 VDC
10 to 30 VDC
V
0 to 7.5 mA
0 to 0.5 mA
2.5 to 7.5 mA
2.0 mA
3.9 K Ω minimum
/I )
in
I
in
5 µsec maximum
1 ms scan cycle/
1 ms max response time
5 µsec maximum
1 ms scan cycle/
1 ms max response time
Page 45 of 96
= 8 VDC
in
≤ 6 mA