This page collects the limits and defaults of Hermetry’s LoRaWAN network server. The pages linked in each section explain them.
Gateways and devices
Item Limit Device limit Gateways and end devices count toward your plan’s device limit like any device. A licensed router serving as a gateway counts once, as itself. Gateways per organisation No separate limit beyond the device limit Gateway EUI 16 hexadecimal digits; not all zeros or all F; unique on the whole platform DevEUI 16 hexadecimal digits; not all zeros or all F; unique on the whole platform JoinEUI 16 hexadecimal digits (all zeros allowed) AppKey, NwkSKey, AppSKey 32 hexadecimal digits each DevAddr (ABP) 8 hexadecimal digits, inside the network’s NetID prefix, unique among your live devices Name of a gateway or device 1–128 characters Gateway location Latitude −90 to 90, longitude −180 to 180, altitude −1,000 to 100,000 m LoRaWAN versions 1.0.2, 1.0.3, 1.0.4 Classes A, C Region EU868 only
See Add a gateway , Add an OTAA device , Add an ABP device .
Profile settings
Setting Default Range RX1 delay 5 s 1–15 s RX1 data-rate offset 0 0–5 RX2 869.525 MHz, DR0 DR0–DR7 ADR On ADR data-rate range (UI) DR0–DR5 DR0–DR5 Installation margin (ADR) 10 dB 0–30 dB De-duplication window 200 ms 50–1,000 ms Device status request interval 24 h 0 (never) – 720 h Confirmed downlink sends 3 0–10 Class C reachable after the last uplink 900 s 60–86,400 s Class C acknowledgement wait 60 s 5–3,600 s Aggregated duty-cycle request 0 (none) 0–15
See LoRaWAN device profiles .
Joins and frames
Item Limit Join accept Sent 5 s (RX1) or 6 s (RX2) after the join request DevNonce memory (1.0.2, 1.0.3) The last 256 values per device Frame counter step At most 16,384 forward; a repeat only as the retransmission of the last confirmed uplink Device message per uplink One, however many gateways heard it Decoded keys per message 64, nested at most 4 levels raw payloadUp to 4,096 bytes (as hex) Frames log The last day, at most 1,000 frames per organisation; the drawer shows 200
Pairing mode
Item Limit Window length 1–120 minutes (the UI offers 5, 15, 30, 60, 120) Devices listed per window 200, newest first Requirement A shared AppKey on the profile
See Pairing mode .
Downlinks
Item Limit Method lora.downlinkfPort1–223 dataHex or base64, at most 1,024 characters Max payload, DR0–DR2 51 bytes Max payload, DR3 115 bytes Max payload, DR4–DR7 222 bytes Class C downlinks At the RX2 data rate (DR0 by default: 51 bytes) Application downlinks per Class A uplink 1 Duty-cycle planning 90 % of each sub-band’s hourly budget per gateway Command limits The general command limits apply: 10 per device per minute, 600 per organisation per minute by default
See Sending downlinks and Regions and frequency plans .
Gateways at run time
Item Value Health record One per gateway per minute Connection re-check Every open gateway connection is re-checked every 60 s Malformed messages 3 within 60 s close the connection Gateway map Up to 1,000 gateways, refreshed every 15 s
Codecs
Item Limit Library 106 codecs Your codec id t. + 2–62 lower-case letters, digits or dashesYour codec size 40,960 bytes Test vectors per codec At least 1, at most 200 Models, FPorts per codec 64 each Maker codes (OUI) per codec 32 Nesting depth 32 levels Test bench frame FPort 1–255, at most 255 bytes API rate, no credential 60 a minute per address (bundle: 6 an hour) API rate, users and API keys 240 a minute (bundle: 30 an hour) API rate, licensed routers 120 a minute per certificate
See Write your own codec and Codecs API .
