What do WMS, ERP and fleet management each do?
An ERP, or enterprise resource planning system, manages business information such as orders, production requirements and purchasing. A WMS, or warehouse management system, manages warehouse stock, locations and work. Fleet management turns transport demand into jobs for available robots.
The boundaries vary by site. The following is a practical starting arrangement, not a requirement that every warehouse uses all three systems.
| System or equipment | Typical responsibility | What the site manager should expect |
|---|---|---|
| ERP | Business and production demand | A clear reason for the material movement |
| WMS | Stock identity, locations and warehouse tasks | The right goods are authorised to move |
| Fleet management | Robot selection, task execution and traffic coordination | An appropriate vehicle receives and completes the transport |
| Robot | Driving and supported handling actions | Reliable movement and truthful reporting of its progress |
| Station controller | Local equipment such as a conveyor or automatic door | Equipment is ready before the handover proceeds |
For an individual site, document who may reserve a destination, confirm a pickup and close a warehouse task. Leaving those decisions implicit creates disputes when the robot and the warehouse screen show different results.
What is the role of fleet management?
Shared fleet management can receive transport requests, translate them for the selected robots and return a consistent view of progress. This avoids making the WMS manage every difference between vehicle interfaces.
An API, or application programming interface, is a defined way for software to exchange requests and information. An adapter is the translation component used when two sides do not speak the same format.
An adapter must translate meaning as well as field names. A robot's “arrived” event may mean it reached a station. The warehouse process may require confirmation that the pallet has been unloaded before the task can be closed.
SyncroBot provides manufacturer-independent fleet management with optional WMS and ERP connections. That makes it possible to organise robot execution centrally while deciding how much of the business process to connect.
Central fleet management should still have a defined boundary. It need not replace inventory management or production planning to coordinate the transport requested by those systems.
How does a transport request become a completed warehouse task?
Consider an example in which a prepared pallet must move from packing to dispatch. The process needs more detail than a start point and an end point.
| Stage | Meaning in this example | Evidence to agree |
|---|---|---|
| Requested | The business needs this pallet moved | A unique transport reference and valid load identity |
| Accepted | The fleet system has taken responsibility for the request | Confirmation that the task exists and can be processed |
| Assigned | A suitable robot has been selected | Vehicle identity and current task status |
| Picked up | The robot has acquired the intended load | An agreed sensor, scan or operator confirmation |
| Delivered | The load has been handed over at the destination | Confirmation of unloading at the correct station |
| Recorded | The business system has accepted the result | A completed task or updated stock location |
This is an example process model, not the status vocabulary of a particular robot brand. The integration must map the actual robot and WMS events to the meanings the site needs.
VDA 5050 defines communication for robot orders, actions and state information. It provides useful fleet-interface structure, but the warehouse still needs to determine which event is sufficient evidence for its stock and task records.
The ROS and VDA 5050 guide explains the difference between accessing robot capabilities and exchanging fleet-level instructions.
Why do load and location identifiers matter?
A location name used by the WMS may not match the station name stored on the robot. A pallet, its load and the cart underneath it can also have different identifiers.
Create an agreed mapping between these references. The receiving system should reject an unknown location rather than send the robot to a convenient default. It should also know whether a request refers to a particular load or simply asks for any suitable empty carrier.
For a reusable cart, keep the cart identity separate from its current contents. Otherwise a correctly located cart can still be assigned to the wrong customer order. This becomes particularly important when assets are moved manually or tracked by an RTLS location system.
A shared site map can make location management easier by maintaining consistent station references above individual robot maps. It does not remove the need to verify which physical load is being transported.
What happens when the same request arrives twice?
Connections can be interrupted before a sender receives confirmation. The sender may then repeat a request that the receiving system already accepted.
The integration needs duplicate protection, sometimes called idempotency. Receiving the same intended request again must not create a second physical job. Keep one stable request identifier through retries and return the existing task's status where appropriate.
Messaging guarantees do not, by themselves, settle this business problem. MQTT, a protocol used in industrial messaging, defines different levels of message delivery assurance.
Ask the integration team to demonstrate a lost confirmation followed by a retry. There should still be one intended transport and one final warehouse result.
How should the system handle a full destination or a cancellation?
A full destination needs a defined response before the robot arrives carrying a load. The system may reserve a space, hold the task before pickup or use an agreed alternative location. The appropriate choice depends on the process.
A cancellation is also a physical decision. Before pickup, removing the request may be straightforward. After pickup, the goods still need a valid destination, and the warehouse records must remain consistent with where they finish.
The operator screen should explain whether work is waiting, blocked or requires a decision. A useful message identifies the load, location and reason. “Task error” alone forces staff to reconstruct the situation from several systems.
Assign one owner for each recovery step. The warehouse team may decide the alternative destination; the robot supplier may resolve a handling fault; the integration provider must keep the task history consistent across those actions.
Why do doors, conveyors and chargers belong in the integration?
The vehicle is only one participant in an automatic handover. A conveyor may need to confirm that its receiving position is empty. A door may need to report that it is open. A charger must be available and compatible with the selected robot.
A handshake is an agreed exchange of signals before equipment proceeds. For a conveyor transfer, that might cover arrival, alignment, readiness, transfer and confirmation that the load has left the robot.
Specify how the handshake stops or recovers when a signal is missing. This is especially important when several suppliers provide different parts of the installation. One company should be responsible for demonstrating the complete sequence, even when individual components have separate warranties.
What should IT and operations agree before deployment?
The IT team needs the connection requirements, access permissions and support arrangements. Operations needs to know what happens when those connections are unavailable.
Agree network coverage, permitted communications, account ownership and the process for remote support. Define how software updates are tested and who can restore a working configuration. NIST's operational-technology guidance treats security alongside the reliability and availability needs of physical operations.
For daily use, make the age of information visible. A dashboard should not show an old robot position or task state as though it were current. If a robot reconnects after an interruption, compare its actual load and task status with the stored request before issuing new work.
How can the first connection stay manageable?
Begin with the information needed for one useful process. A cart-return task may only need a source, destination and completion response. A stock-controlled pallet movement may also require load identity, destination reservation and inventory confirmation.
SyncroBot supports locally triggered tasks as well as wider integration. That allows a site to introduce the transport first and extend the connection where it removes additional manual work.
The important point is to keep the process reusable. Use stable identifiers, documented states and one agreed recovery path. Adding a second robot should not require the WMS to learn a second set of meanings for the same transport.
What should the quotation and payback assessment include?
Describe the systems being connected, the requested workflows and the equipment involved in each handover. Include commissioning, operator training, ongoing support and the handling of interrupted tasks. Contact SyncroBot for a price estimate based on that scope.
For suitable applications, payback can be possible in 18 months, depending on workload and project scope. The estimate must include retained manual work and running costs. This is a use-case-dependent possibility, not a return guaranteed by a shared map or the choice of interface.
Use the payback calculator.