Digital Input Module
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CT-121F: 16 channel digital input/24VDC/ Sink type
CT-121F：16 channel digital input/24VDC/ Sink type/The input high level is valid
Module features
◆ the module supports 16 channels digital input, supports sink input, and input voltage is 24VDC.
◆ 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 <200Hz.
◆ the module can set the digital signal input filtering time and the byte transmission order of the counter.
◆ each channel of the module can set the counting mode and counting direction independently.
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CT-122F: 16 channels digital input/0VDC/Source type
CT-122F 16 channels digital input/0VDC/Source type/Input 0V, the input low level is valid
Module features
◆ the Module supports 16 channels digital input, supports source input, the input voltage is 0V and the input low level is valid.
◆ the module could collect the digital output signal of field equipment (dry contact or active output).
◆ the module can be connected to a 2-wire or 3-wire digital sensor.
◆ the internal bus of the module and field input are isolated by optocoupler.
◆ the module supports input signal holding function, holding time can be set.
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CT-124H：32 channels digital input/24VDC/Sink or Source type
CT-124H: 32 channels digital input, sink or source, 34Pin male connector, 24Vdc, counting function supported (counting frequency up to 200Hz)
◆ the module supports 32 channels digital input, it supports sink input and the input high level is valid as it could support PNP sensor; it also supports source input and the input low level is valid as it could support NPN sensor.
◆ the module could collect the digital output signal of field equipment (dry contact or active output).
◆ the module could be connected to 2-wire or 3-wire digital sensor.
◆ the internal bus of the module and field input are isolated by optocoupler.
◆ the module supports input signal holding function, holding time can be set.
◆ after adding counting submodule in ODOT configured software, the counting function is effective.
◆ each input channel of the module supports 32-bit counter with counting frequency <200Hz.
◆ the module could be set the digital signal input filter time and counter byte transmission sequence.
◆ each channel of the module could be set the counting mode and counting direction independently
