Delta DOP-300 Series IIoT HMI 7 10 inch Ethernet Wi-Fi MQTT

The DOP-300 is the advanced IIoT series. Key differences: (1) processor — Cortex-A7 dual core at 1.2 GHz versus Cortex-A8 single core at 800 MHz on DOP-100 basic models; (2) memory — 512 MB Flash + 512 MB RAM versus 256 MB + 256 MB; (3) networking — two isolated Ethernet ports versus no Ethernet on basic models; (4) wireless — built-in antenna with Wi-Fi / 4G module support; (5) protocols — MQTT and OPC UA support; (6) display — 24-bit full colour, IPS fully laminated, 170° viewing angle. For local operation and serial communication only, the DOP-100 is more economical; for cloud or MES connectivity, choose the DOP-300.

These are dominant industrial IoT protocols. MQTT is lightweight and suited to bandwidth-constrained networks — commonly used to push device data to cloud platforms. OPC UA carries semantic data modelling and security mechanisms, making it ideal for exchanging structured data with MES and SCADA systems. Supporting both ensures the DOP-300 isn't tied to one vendor's cloud service and can connect to existing IoT platforms — particularly important for OEM export machinery.

The housing has a built-in antenna design and accepts detachable wireless communication modules. The modules themselves are optional — where wireless is needed, add the module rather than replacing the unit. For sites with difficult cabling or mobile equipment, specify module requirements and regional certification during quotation.

DIACloud is Delta's cloud service platform and DIAWebDesigner is a web-based editor requiring no local installation. Confirm cloud service pricing and licensing with Delta or an authorized distributor — this page makes no claims about price or free-tier allowances. Third-party sources have mentioned annual cloud license tiers, but this is not officially confirmed.

Two typical approaches: (1) Network segmentation — one port connects device-level network (PLCs, drives) and the other connects plant control network, with isolation to avoid broadcast interference; (2) Redundancy or load splitting — link redundancy for critical applications. Both ports have isolated circuits, which is crucial where cabling crosses distribution cabinets with different ground potentials.

Delta officially recommends equipment requiring cloud-based remote monitoring, such as air compressors and water pumps, and the medical, pharmaceutical, and food and beverage industries. Selection logic: if the machine needs to send data to cloud, MES, or customer platforms — choose DOP-300; if only local operation and serial communication are needed — DOP-100 series is more economical.