Two modules can look identical and not be interchangeable. The label tells you which one you actually have, and getting it right before you ask for a quote saves a wasted order.
The full order number
This is the long alphanumeric code, often starting with the manufacturer's family prefix. Copy it exactly, including dashes and trailing characters. Shortened names such as the name printed on the front of the module are not enough, because the same short name can cover several variants.
Hardware and firmware version
Many labels show a version, series or revision. Newer versions can behave differently or need a newer engineering software release. Note it down, and tell us if the module is part of a system that is not due for upgrade.
Voltage and I/O type
Check supply voltage and, for I/O modules, whether channels are digital or analogue, sinking or sourcing, and what signal ranges they expect. These are printed on the label or on the side of the module.
What to send us
- A clear, straight-on photo of the label with good light
- The order number typed out, so nothing is misread from a photo
- The quantity you need
- Whether the machine is down or you are planning ahead
If part of the label is worn away, send what you can see along with the machine or panel it came from. We can often work out the rest.
Not sure which brand a part number belongs to? Paste it into the part number identifier.