I’ve got a project that I am going to work on. Looking for a I/O Module that would do the following, to facilitate communications between a pulse from a Gas meter and a data collection device.
Basically we have a digital pulse signal at one end and our data collection device(no IO capability, but ModbusTCP support) at the other. I need the I/O module in a panel in between to connect the two.
Here’s the requirements: The data collection device communicates via ModbusTCP. The IO hardware installed in the panel must communicate via Modbus TCP.
-The IO hardware in the panel must support pulse counting. The minimum pulse width (time that the pulse is “on”) is 50msec. The data collection unit will not be trying to catch and count every pulse, instead it will periodically interrogate the pulse count in the IO device. There is no need for high speed pulse counting equipment as the frequency of the pulses is not that high.
-The IO module must store pulse counts in non-volatile memory so that when power is restored the previous count is maintained. The IO module should also support analog (4-20mA) signals, or be expandable to support these signals. Currently we have only a single digital input to the IO panel; however, in the future we may add additional meters and would like the flexibility to do so without having to add additional panels.
Basically we have a digital pulse signal at one end and our data collection device(no IO capability, but ModbusTCP support) at the other. I need the I/O module in a panel in between to connect the two.
Here’s the requirements: The data collection device communicates via ModbusTCP. The IO hardware installed in the panel must communicate via Modbus TCP.
-The IO hardware in the panel must support pulse counting. The minimum pulse width (time that the pulse is “on”) is 50msec. The data collection unit will not be trying to catch and count every pulse, instead it will periodically interrogate the pulse count in the IO device. There is no need for high speed pulse counting equipment as the frequency of the pulses is not that high.
-The IO module must store pulse counts in non-volatile memory so that when power is restored the previous count is maintained. The IO module should also support analog (4-20mA) signals, or be expandable to support these signals. Currently we have only a single digital input to the IO panel; however, in the future we may add additional meters and would like the flexibility to do so without having to add additional panels.
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