PMI-8I
multi counters module 101 x 22,5 mm
Multi counters module PMI-8I allows to counting
of pulses delivered to 8 isolated binary inputs
independently. All counters are 32 bit long and
can be read and cleared by user at any time.
Occurrence of HIGH state on particular input is
signalled by green LEDs marked IN1 to IN8.
Incrementation of counter occurs after falling
edge on particular input (input state changes
from HIGH to LOW). It is essential that pulses
have fulfill some time restrictions. These
restrictions depend on settings of implemented
internal digital filter, which allows to eliminate
signal oscillations corresponding to contacts
bouncing (of mechanical sensors). Standard
functions of MODBUS RTU protocol make
internal registers (like: address, device ID,
counters content etc.) accessible via RS-485
interface. All PMI-8I operating functions,
available via the RS-485, can be implemented
from any typical visualization software or, for
instance, with a suitably PAC-99X controller.
Features
- multi counters module
- 8 independent voltage inputs
- LEDs for module operation and Modbus transmission signalling
- interface RS-485/Modbus RTU
Accessories
Functionality:
- galvanic separation of the digital inputs from the module supply voltages,
- internal digital filter,
- signalling MODBUS correct operation and transmission,
- input signals connected by means of the socket-plug connectors,
- signalling of inputs states.