The following specifications apply to the digital inputs and outputs on the CPU, Communication Digital I/O and Sensor Digital I/O modules:
Inputs (CPU 0-1 and DI/O 0-17)
|
Description |
CPU: Differential (Sink or Source) DI/O: Sinking (Sourcing driver) |
|
Logic Polarity |
CPU: True High DI/O: Configurable (True High default) |
|
Isolation |
2500 VAC RMS optically isolated |
|
Signal compatibility |
6 mA max at 5 VDC, 10 mA max at 24 VDC |
|
Threshold voltage |
2.75 VDC typical, 3 VDC maximum |
|
Threshold current |
2.7 mA typical, 3.2 mA maximum |
|
Max input voltage |
26.4 VDC |
|
Filtering |
Digital I/O Inputs 0-15: 500 µs Digital I/O Inputs 16-17: 250 µs CPU Inputs 0-1: none |
|
8-bit edge counter |
Input 17 |
|
Quadrature counter |
Inputs 16 (A input) and 17 (B input) |
Standard Outputs (DI/O module 0-7, CPU module 0-1)
|
Description |
Solid State Relay CPU: Independent DI/O: Common high or low side |
|
Logic polarity |
CPU: True High DI/O: Configurable (True high default) |
|
Isolation |
2500 VAC RMS |
|
Maximum voltage |
±30 V (DC or peak AC) |
|
Maximum current |
±100 mA |
|
Max. propagation delay |
1.5 ms |
|
Logic 1 |
Low impedance (50 W maximum) |
|
Logic 0 |
High impedance (<1 mA leakage current at 250 V) |
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