Communication

Key Description

✔
Applies to this component
❌
Does not apply to this component
N/A
Not Available / Not applicable for this component
Driver Polling Poll on use Single query Unsolicited communication Driver redundancy: Only active driver polls Buffering1
Modbus/TCP Driver ✔ ❌ ✔ ✔ (UNICOS) configurable ❌
Modbus/TCP Server N/A N/A N/A N/A N/A ❌
Ethernet/IP Driver ✔ ❌ ✔ ✔ (Implicit Mode) configurable ❌
OPC Unified Architecture (OPC UA) (DA)2 ✔ ❌ ✔ ✔ ❌ ✔
OPC Unified Architecture (OPC UA) (AC)2 ✔ N/A N/A ✔ N/A ✔
OPC Unified Architecture (OPC UA) (HA)2 ✔ N/A N/A ✔ N/A N/A
OPC UA Server (DA)2 N/A N/A N/A N/A N/A ✔
OPC UA Server (AC)2 N/A N/A N/A N/A N/A ✔
OPC UA Server (HA) N/A N/A N/A N/A N/A N/A
OPC Client (DA) ❌ ❌ ✔ ✔ ❌ ❌
OPC Alarms & Events Client ❌ ❌ ❌ ✔ N/A ❌
OPC HDA Client ❌ ❌ Historical queries must be triggered on demand ❌ N/A ❌
OPC Server N/A N/A N/A N/A N/A ❌
OPC Alarms & Events Server N/A N/A N/A N/A N/A ❌
OPC HDA Server N/A N/A N/A N/A N/A ❌
IEC 61850 Driver ✔ ✔ ✔ ✔ configurable ✔ (Only for BRCBs)
IEC 60870-5 Driver (101) ❌ ❌ ✔ ✔ ❌ ✔
IEC 60870-5 Driver (104) ❌ ❌ ✔ ✔ ❌ ✔
MQTT ❌ N/A ❌ ✔ configurable (Subscription instead of polling) ❌
RK512 Driver ✔ ❌ ✔ ✔ ❌ ❌
S7 Driver ✔ ✔ ✔ ✔ (TSPP) configurable ✔ (TSPP)
S7Plus Driver ✔ ✔ ✔ ✔ (Subscriptions + TSPP) configurable ✔ (TSPP)
S-Bus Driver ✔ ❌ ✔ ❌ ❌ ❌
SNMP ✔ ❌ ✔ ✔ (Traps) configurable ❌
SNMP (Live Agent) N/A N/A N/A N/A N/A N/A
SECS ✔ ❌ ✔ ✔ configurable ❌
SECS/GEM Gateway N/A N/A N/A ✔ N/A ❌
OCPP N/A N/A N/A ✔ ❌ ✔
SSI Driver ❌ ❌ ❌ ✔ ❌ ❌
TLS Gateway ❌ ❌ ❌ ✔ ❌ ❌
BACnet Driver ✔ ✔ ✔ ✔ ❌ ✔ (TrendLog)
DNP3 Driver ✔ ❌ ✔ ✔ ❌ ✔
SINAUT Driver ❌ ❌ ✔ ✔ ❌ ❌

1) The WinCC OA driver supports receiving buffered data from the PLC that was stored during a connection loss. This applies to all entries in the table marked with a "✔" in the Buffering column.

2) The WinCC OA driver or server itself buffers data during a connection loss and forwards it once the connection is re-established.