Xylem H-4271 - Manual (Page 16)

2.7.4 Repeater
These settings configure the radio for repeater operation. With repeaters, sleep&sniff will not
work. All radios in the network must be continually powered. With these settings any radio can
be a repeater, master, or a slave. Each module must have a unique MY (Source Address)
parameter. These settings are for Broadcast communications - each packet comes out every node
exactly once.
Step 1. Program radio with custom modem settings
+++ activate AT mode
ATRE restore defaults
ATBD 3 9600 baud
ATNB 0 no parity
ATPL 4 1-watt
ATCD 0 GPO2 = RxDat LED
ATCS 1 assert RTS while receiving data
ATDT DCAB set the networking address
ATRN 1 delay slots, repeaters may be in reach of each other
ATPK 100 max packet size = 256 bytes
ATRB FF packetization threshold = 255 bytes
ATRO 10 packetization timeout, 16 x 1/9600 x 10 = 16.6 ms
[1/1200 x 10 = 8.3ms]
assures data will arrive in contiguous packets
ATMD 5 repeater
ATWR write settings
ATCN cancel AT mode
Step 2. Set the “MY” address for each radio
+++ Activate the AT mode
ATAM autoset the address
ATWR write the new setting
ATCN cancel AT mode
2-6 Installation And Maintenance
H-4271