PLC Bandwidth & Polling Calculator
Estimate the network bandwidth your IIoT polling layer will consume. Use this before deploying an edge gateway to confirm the target network segment can carry the load.
01 Device & Tag Configuration
Total devices being polled by the edge gateway
Average number of data points collected per device
Payload size per data point (BOOL=1, INT=2, FLOAT=4, DWORD=4)
Sets framing overhead multiplier for this protocol
02 Polling & Network Parameters
How frequently each tag is sampled
Available bandwidth on the target segment
How long the edge buffer must hold data if the uplink fails
Live Results — updates as you adjust inputs
Raw Data Rate
0 KB/s
with protocol overhead
Daily Data Volume
0 MB
historian / storage sizing
Link Utilization
0%
of selected link capacity
Edge Buffer Required
0 MB
at selected outage tolerance
Link Utilization
0%
50% caution
80% critical
100%
Protocol Note
Methodology:
Raw data rate = (PLCs × tags per PLC × bytes per tag × protocol overhead multiplier) ÷ polling interval.
Daily volume = raw data rate × 86,400 seconds.
Link utilization = raw data rate ÷ link capacity (MB/s).
Edge buffer = raw data rate × outage tolerance in seconds.
Overhead multipliers account for protocol framing, acknowledgment packets, and connection management traffic under typical operating conditions.
Actual utilization will vary based on change-of-value filtering, compression, and network topology.