Product Overview and Engineering Role
The SimtoLink IEC104-to-MQTT gateway stays compatible with the dispatch master on IEC 60870-5-104 and publishes incremental telemetry and status onto the enterprise MQTT cluster. Production control stays on 104. Analytics and AI use the lighter message bus.
SimtoLink supplies an ASDU-to-topic map, a policy that keeps SOE order, and certificate templates. Primary and standby links are available on some models. Volume projects can add redundant power and a wide-temperature enclosure.
Reliability and Site Conditions
On electrical safety and EMC, this gateway has cleared the relevant CCC items. Ports include surge and reverse-polarity protection. Reinforced grounding and a partitioned layout hold down ground loops and common-mode interference. Outdoor or coastal sites can take a higher ingress rating and a corrosion-resistant coating.
Parameters load in bulk, threshold policies can be set, and event video or waveforms can be kept, depending on the model. Configuration and firmware go out by OTA. Before sign-off, run a power-on self-test, sync time on the link, and spot-check a sample. For metering or safety use, SimtoLink helps submit the unit to a third-party metrology institute and provides the type-test documents.
Key Hardware Parameters
These figures are the typical build of this gateway, for selection and for a technical clause in a tender. For a wider range, redundant power, or an intrinsically safe explosion-proof variant, ask SimtoLink for the Hardware Specification and the Installation and Commissioning Guide. Order codes in the same family can differ slightly; the nameplate and the papers shipped with the gateway govern.
| Parameter | Specification | Remarks |
|---|---|---|
| CPU | x86 quad-core | Fanless |
| Memory / storage | 8 GB / 64 GB SSD | Industrial grade |
| Ethernet | 2×GbE | RSTP redundancy |
| Serial | 4×RS232/485, configurable | 2.5 kV isolation |
| Wireless | Wi-SUN | External antenna |
| Protocol stack | Modbus / OPC UA / MQTT | Extensible |
| Operating temperature | −28～66 ℃ | Wide temperature |
| Power | DC 12～48 V | Redundant terminals |
| Mounting | Wall mount | Grounding required |
| Security | Allowlist ACL | Signed firmware check |
Typical Deployments
How this gateway usually lands on site, for scheme selection and for the integration check:
Dispatch data into the lake
Live 104 values go over MQTT into Kafka or a data lake for offline analysis and reports, without changing the master-station poll cycle.
Grid operations
An alarm topic starts a work-order bot and a knowledge-base search, which shortens the time to find the fault.
Multi-tenant energy operations
Each campus gets its own MQTT prefix. One gateway forwards those slices separately.
Installation, Grounding, and Maintenance
- Check the supply range and polarity before you apply power. Where the bus is shared, confirm voltage and breaker rating with a multimeter.
- Use shielded twisted pair, ground the shield at one end, and do not lay it for a long distance in the same bundle as high-power cables.
- Before the first site cutover, prove bidirectional read and write and a threshold trip against the platform in the lab.
- Outdoors, leave a path for drainage and for air, inspect the gasket faces on a round, and keep the lightning earth resistance inside the local limit.
- While the gateway stays in service, spot-check a sample and archive the logs every 12 months.
Ordering, Documentation, and Support
SimtoLink ships a hardware specification, an outline drawing, a wiring table, and a sample project with the gateway. Volume orders can include a sample review and an inspection at the factory. Warranty and calibration follow the contract and the papers that travel with the unit.
Further Reading
Related hardware pages in this section, for combining dispatch and metering protocols: