TDI340 is an S0 pulse counter with MODBUS RTU interface. It has 4 isolated digital inputs that complies with S0 standard 62053-31. S0 pulse counter operates in polling or level-shift mode. In the level-shift lstand the module can be set to count on rising, falling and both level changes. The unit is a dedicated S0 pulse counter, but it also provides simultaneous readings of the state of digital inputs - OPEN / CLOSE.
Independent delay for transitions from low to high and high to low can is used. It may be delays from 0 to 656 seconds in 10mS steps and works if the counter for the corresponding digital input is in polling mode.