RTUs & SCADA Gateway

One rugged hardware platform, loaded with the protocol stack your project runs. Certified, documented and supported through commissioning.

RTU's IEC 104 IEC 101 IEC 103 IEC 61850 DNP3 DLMS/COSEM SCADA Gateway Platform
Main menu · RTU's

Remote Terminal Units

Acquire status, analogues, counters and events from switchgear, relays and meters, and deliver them to control-centre SCADA over the standard your utility mandates. Every variant shares the same I/O modules, redundancy options and configuration tool.

IEC 104

IEC 60870-5-104 RTU

TCP/IP telecontrol RTU for substation-to-SLDC and substation-to-master communication. The default choice for new control-centre connectivity where an Ethernet/MPLS WAN is available.

ProtocolIEC 60870-5-104 (controlled & controlling)
TransportEthernet 10/100, dual NIC
RedundancyDual master, hot-standby CPU
Field sideIEC 101/103, Modbus, DNP3, IEC 61850
Time syncNTP / SNTP, IRIG-B option
SecurityRole-based access, secure logs, optional TLS
Control centreSLDC Operating manual Enquire
IEC 101

IEC 60870-5-101 RTU

Serial telecontrol RTU for links over leased line, radio or PLC where legacy master stations expect balanced or unbalanced IEC 101.

ProtocolIEC 60870-5-101 balanced / unbalanced
TransportRS-232 / RS-485, modem, radio
Link modesPoint-to-point, multi-drop
Field sideModbus, DNP3, IEC 103, digital/analogue I/O
Baud300 bps – 115.2 kbps
EnclosureDIN-rail or 19" rack
Serial WANLegacy master Operating manual Enquire
IEC 103

IEC 60870-5-103 RTU

Protection-interface RTU that collects measurements, disturbance records and events from IEC 103 protection relays and exposes them to station and control-centre SCADA.

ProtocolIEC 60870-5-103 master
Relay busRS-485 / fibre-optic star coupler
DataMeasurands, events, disturbance records
UplinkIEC 104, IEC 101, IEC 61850, DNP3
Relays / portUp to 32
DiagnosticsPer-relay comms health
ProtectionRetrofit Operating manual Enquire
IEC 61850

IEC 61850 RTU

Station-bus RTU / bay unit speaking MMS and GOOSE. Acts as data concentrator and protocol gateway between the IEC 61850 station bus and control-centre SCADA.

ServicesMMS client/server, GOOSE pub/sub
EngineeringSCL — ICD / CID / SCD import
UplinkIEC 104, DNP3, ICCP option
Time syncSNTP, PTP (IEEE 1588) option
ReportingBuffered & unbuffered reports
EditionIEC 61850 Ed. 1 & Ed. 2
Station busSAS Operating manual Enquire
DNP3

DNP3 RTU

DNP3 outstation for distribution automation and utilities that standardise on DNP3 — serial or over IP, with Secure Authentication support.

ProtocolDNP3 outstation, Levels 1–3
TransportRS-232/485 and TCP/UDP
FeaturesUnsolicited responses, data sets, time sync
SecurityDNP3 Secure Authentication v5
Field sideModbus, IEC 101/103, I/O modules
MastersMultiple concurrent masters
DistributionDA / FA Operating manual Enquire
DLMS

DLMS/COSEM RTU

Meter data concentrator (DCU) that polls DLMS/COSEM energy meters and publishes load, energy and event data to SCADA, MDM or head-end systems.

ProtocolDLMS/COSEM (IEC 62056) client
Meter linkRS-485, optical, PLC, RF, cellular
ProfilesInstantaneous, load, billing, events
UplinkIEC 104, DNP3, MQTT, REST option
Meters / DCUScalable to several hundred
SecurityDLMS security suites, key management
MeteringSmart grid Operating manual Enquire
Main menu · Gateways

Gateways

Where an RTU acquires field data, a gateway moves data between protocols and masters — concentrating, translating and re-scaling without changing the field wiring.

Gateway

SCADA Gateway

Any-to-any protocol gateway and data concentrator. Runs multiple client and server stacks simultaneously to bridge a mixed substation to one or many control centres, with point re-mapping, scaling, calculations and store-and-forward.

Server (upstream)IEC 104, IEC 101, DNP3, IEC 61850, ICCP/TASE.2 option
Client (downstream)IEC 101/103/104, IEC 61850 MMS/GOOSE, DNP3, Modbus, DLMS
ConcentrationThousands of points, multi-master
ProcessingRe-map, scale, invert, math & logic, dead-band
ResilienceDual CPU, dual power, store-and-forward buffer
ManagementWeb config, versioned point database, syslog
CyberRBAC, secure protocols, audit trail (IEC 62443 aligned)
Mounting19" 1U rack or DIN rail
Protocol converterData concentratorMulti-master Operating manual Enquire
Common platform

One hardware family behind every model

Standardising on a single platform means spares, training and configuration tools carry across your whole estate.

  • Industrial CPU, −20 °C to +70 °C operation, conformal-coated boards
  • Hot-swap digital / analogue / counter I/O modules
  • Dual redundant power (110/220 V DC or AC), wide-range input
  • Dual Ethernet, multiple serial ports, optional fibre
  • Watchdog, event-stamped SOE to 1 ms, non-volatile logs
  • Cyber-hardened firmware, signed updates, role-based access

Typical I/O per rack

Digital inputsup to 512
Digital outputsup to 128
Analogue inputsup to 128
Countersup to 64
Serial portsup to 16

All product names, model designations, firmware, protocol implementations, configuration tools, documentation and hardware designs referenced on this page are the copyright and intellectual property of Firstcall Automation. Protocol standards (IEC, IEEE, DNP Users Group, DLMS UA) remain the property of their respective bodies. Reproduction or reverse engineering without written permission is prohibited. See our Terms & Conditions.

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