AXIOMTEK tBOX510-518-FL-24-110MRDC, User Manual

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tBOX510-518-FL-24-110MRDC U
ser’s Manual
Digital I/O
49
APPENDIX B
DIGITAL I/O
Digital Input:
Ext Power Input Voltage: 30Vdc Max.
Digital Input channels: 4, sink/source type
Digital Input voltage: 0 to 30VDC
Input level for dry contacts:
Logic level 0: close
Logic level 1: open
Input level for wet contacts:
Logic level 1: +/-3VDC max.
Logic level 0: +/- 10VDC min. to +/-30VDC max. (source to digital input)
Digital output:
COM+ Power Input Voltage: 30Vdc Max. On-state voltage:12~ 24VDC nominal
Output channels: 4, sink type,
Output current: 200mA max. per channel
Digital I/O Software Programming
 I2C to GPIO PCA9554PW GPIO Group0[3:0] is Output, Group0[7:4] is Input.
 I2C address: 0100010x.
 Registers: