48 SmartController EX User's Guide 11069-000 Rev. H
4.6 Connecting User-Supplied Digital I/O Equipment
REACT Input Signals 1001 to 1012
Inputs 1001 to 1012 (only) may be used by the eV+ REACT and REACTI instructions. See the
eV+ Language Reference Guide for information on these instructions. If you are going to use
these instructions, you should plan your digital I/O channel usage accordingly.
In addition to functioning as normal input signals, all input signals can have the following
special uses:
l
Fast DIO eV+ Interrupt Events (INT.EVENT)
l
Robot and Encoder Position Latch
Fast DIO interrupt events (using INT.EVENT) require the optional eV+ Extensions License.
When the program task priorities are properly set, there is a 1ms maximum latency for the
fast inputs when used with the eV+ INT.EVENT instruction.
See the eV+ Language Reference Guide for a description of the INT.EVENT instruction.
Output Signals
The XDIO connector handles output signals 0001 to 0008. Refer to the following table for out-
put specifications. The locations of the signals on the connector are shown in the table XDIO
Digital I/O Connector Pin Assignments on page 50. The XDIO connector provides separate pos-
itive and negative connections for each channel (no internal common connections). This
allows the choice of wiring for current-sourcing or current-sinking modes.
Table 4-13. DIO Output Specifications (XDIO connector)
Operating voltage range 0 to 24 VDC
Operational current range, per channel I
out
≤ 100 mA, short-circuit pro-
tected,
1 A total at 24 V
V drop across output in ON condition V drop ≤ 2.7 V at 100 mA
V drop ≤ 2.0 V at 10 mA
Output off leakage current I
out
≤ 600 µA
Turn-on response time (hardware)
Software scan rate / response time
3 µsec maximum
1 ms scan cycle
1 ms max. response time
Turn-off response time (hardware)
Software scan rate / response time
200 µsec maximum
1 ms scan cycle
1 ms max. response time
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