8-channel input module CT-1228

digitalModbus RTUModbus TCP

Product Feature: CT-1228: 8 channels digital input/24VDC/NPN ◆ the module supports 8 channels digital input, and the input low level is valid. It could support NPN sensor. ◆ the module could collect digital output signal of field equipment (dry contact or active output). ◆ the module could be accessed to 2-wire or 3-wire digital sensor. ◆ the internal bus and field input of the module use opto-isolator. ◆ the module supports the input signal holding function, and the holding time can be set. ◆ the module carries 8 digigtal input channels with LED indicator on each channel. ◆ supports counting function after adding counting sub-module. ◆ each input channel of the module supports a 32-bit counter with the counting frequency 7.5kΩ Input delay: OFF to ON: Max.3ms ON to OFF: Max.2ms Filter time: Default 10ms Sample frequency: 500Hz Counter frequency: <200Hz