Description

2-CHANNELS MODULE OF LOGIC OR PULSE INPUTS

The SM3 module is destined to collect logic states or to count pulses coming from the inputs and make them available to computerized systems working on the base of RS-485 interface.

The SM3 module of two logic inputs is destined to collect logic states of logic inputs and make them accessible to computer-based industrial systems working on the base of the RS-485 interface.

The module has 2 logic inputs and RS-485 interface with MODBUS RTU and ASCII transmission protocols. RS-485 and RS-232 ports are galvanically isolated from input signals and supply.

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 PC computer (RS-232).

Module parameters:

– two logic inputs,

– RS-485 communication interface with MODBUS RTU and ASCII transmission protocols to operate in computer-based systems with the optical transmission signalling based on LED diodes,

– configurable baud rate: 2400, 4800, 9600, 19299, 38400 bit/s.

Module as an impulse converter.

The SM3 module working as an impulse converter is destined to add measuring devices equipped with impulse inputs, e.g. watt-hour meters, heat-meters, gasmeters, flow transducers a.s.l., to computer systems. Then, the SM3 converter enables the remote readout of the counter state in automatized accounting systems.

The converter has 2 impulse inputs and RS-485 interface with MODBUS RTU and ASCII transmission protocols, what enables its application in computer systems with LUMEL-3000, Wizcon, Fix, In Touch, Genesis 32 (Iconics) and other visualization programs.

Converter parameters:

•  two impulse inputs, independently configured:

–         programmable active state of inputs (high level or low level of the input voltage),

–         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 protection against 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,

–         4 separate registers containing the result of the counter value divisions with weight values of counted impulses,

• RS-485 communication interface with MODBUS RTU and ASCII transmission protocols to work in computer systems with optical transmission signalling on LED diodes,

• configurable baud rate: 2400, 4800, 9600, 19200, 134800 bit/s,

• programming interface on the frontal plate of RJ type (TTL levels),

• several ways of transmission parameter configuration:

–         programmed – by means of the programming interface RJ on the frontal plate,

–         programmed – from the application level, by means of the RS-485 bus,

• storage of the counter state in the non-volatile memory together with the CRC checksum,

• counting of supply decays,

• detection of emergency states.