Digital I/O module CT-121F

ModbusEthernetModbus RTU

CT-121F：16 channel digital input/24VDC/ Sink type Module features ◆ the module supports 16 channels digital input, supports sink input， and the input voltage is 24VDC and the input high level is valid. ◆ the module can collect digital output signal of field equipment (dry contact or active output). ◆ the module can 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 16 digigtal input channels with LED indicator on each channel. ◆ supports counting function, by 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