51. APPLICATIONn Module of logic inputsThe SM3 module of two logic inputs is destined to collect logic states of logicinputs and make them accessible to computer-based industrial systems workingon the base of the RS-485 interface.The module has 2 logic inputs and RS-485 interface with MODBUS RTU andASCII transmission protocols.RS-485 and RS-232 ports are galvanically isolated from input signals andsupply.The module programming is possible by means of the RS-485 or RS-232 port.In the SM3 module set there is a connecting cable to connect with the PCcomputer (RS-232).Module parameters:- two logic inputs,- RS-485 communication interface with MODBUS RTU and ASCII transmissionprotocols to operate in computer-based systems with the optical transmissionsignalling based on LED diodes,- configurable baud rate: 2400, 4800, 9600, 19299, 38400 bit/s.n Module as an impulse converter.The SM3 module working as an impulse converter is destined to add measuringdevices equipped with impulse inputs, e.g. watt-hour meters, heat-meters, gas-meters, flow transducers a.s.l., to computer systems. Then, the SM3 converterenables the remote readout of the counter state in automatized accountingsystems.The converter has 2 impulse inputs and RS-485 interface with MODBUS RTUand ASCII transmission protocols, what enables its application in computersystems with LUMEL-3000, Wizcon, Fix, In Touch, Genesis 32 (Iconics) andother visualization programs.Converter parameters: two impulse inputs, independently configured:- programmable active state of inputs (high level or low level of the inputvoltage),- programmable filter for input impulses with level of defined duration time(separately for high and low level),- impulse counting up to the value 4.294.967.295 and with protectionagainst erasing from the application level,- auxiliary impulse counters with the possibility of erasing in any time,- non-volatile registers storing the weight of counted impulses,