System Network Specification; Epd System-Initial Flow On Device Side; Device Scan For Router - Advantech EPD-023 User Manual

2.3

System Network Specification

Physical transmission data rate is 250 Kbps
Network join performance
a. 1 pcs EPD device takes 6 secs to join the network.
b. 400 pcs EPD device join network in 30 minutes by 1 host WISE-1840 on
WISE-3610Z
Data transfer performance from Gateway
Update 400pcs EPD-023 in 1
hours 2 way communication
Communication with encrypted AES128
Note! The performance will be adjusted according the environmental limita-
tion.
2.4

EPD System-Initial Flow on Device Side

This section will explain how the end device joins, registers, and communicates with
the gateway and router. Users may change some parameters to fit their own sce-
nario.
2.4.1

DEvice Scan for Router

Initial scan: EPD device scans each available channel. If the EPD device still
find the router after 2 mins, it will change the status to
Reconfirm scan: The device will start to scan the channel to look for another
router every 2 mins. If a device still
scan the channel every 2, 4, 8, 16, 32 mins, then every 64 mins for 5 days.
Finally the device will move to deep sleep mode after scanning for 5 days con-
tinuously.
Stop scanning and deep sleep: If the EPD device still
finally, it will stop RF Scanning and go back to deep sleep mode until the button
of the device has been pressed. The device will start scanning from the begin-
ning.
1-Recon m
Ini al Scan
scan
EPD-023 User Manual
find the router after 4 attempts, it will re-
2-Recon m
scan
8
find the router
Stop scanning