"Our machines are too old for that" is a verdict usually reached before anyone surveys. In practice a large share already emit a signal that can be read.
Work backwards from the objective.
Check communication options on the nameplate and in the manual, then look at the machine for ports.
Read the protocol where communication exists; consider RS-485 with Modbus where only serial does.
Connect one machine first and confirm the values match reality — that the counter agrees with actual output and stop signals with actual stops — over a few days before expanding.
There is more than one way out of a machine. No Ethernet may still mean a serial port; no serial may still mean a dry-contact output; and where none exists, an external sensor remains.
What matters is deciding what you want to see first. Starting from "collect everything" turns into surveying dozens of tags per machine and never finishing. If you only need production quantity, one contact often ends it.
Following the order matters more than perfecting each step.
Work backwards from the objective. Automating results means the production counter; downtime analysis means stop signals and reasons; quality cause analysis means process conditions. Fewer items, faster survey.
Check communication options on the nameplate and in the manual, then look at the machine for ports. Ethernet and serial ports, contact terminals and any existing external devices are all in scope.
Read the protocol where communication exists; consider RS-485 with Modbus where only serial does. Count pulses where only contacts exist, and attach a proximity or current sensor where nothing does.
Connect one machine first and confirm the values match reality — that the counter agrees with actual output and stop signals with actual stops — over a few days before expanding.
Patterns that recur in implementation discussions.
Finishing one or two representative machines first makes the remaining survey far clearer.
Second-by-second collection is not automatically better. It raises communication load and storage while analysis often only needs minutes.
Warranty terms and communication specifications are safer confirmed with the manufacturer, particularly for leased equipment where external connection may be restricted.
Where communication negotiations drag, attaching a sensor is sometimes both faster and cheaper.
Confirm these are in place before starting.
The procedure is the same without any product. These shorten the steps.
Questions that come up during evaluation.
Rarely. Without communication you use contacts; without contacts, an external sensor. Replacement is seldom the answer.
Reading existing memory areas is usually sufficient. Only when a required value is not defined at all is a change discussed with the equipment owner.
Read-only access does not participate in control logic. An excessively short polling interval does create load, so the interval is set to the objective.
Contract terms come first. Where external connection is restricted, attaching a sensor outside the machine is the usual way around it.
Equipment mix and current workflow determine how the procedure is adapted.
Request a site survey