User's Manual

T90-DTU User Manual
13
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2，1，0，WOR time
000：500ms
001：1000ms
010：1500ms
011：2000ms（Default）
100：2500ms
101：3000ms
110：3500ms
111：9000ms
Users must transmit the first byte within
1000ms. --------------------------------------
 Only valid in Mode 1.
 Time T= （1+WOR）*500ms，Max 9000ms，
Min 500ms
 The longer the WOR monitoring interval
period, the lower the average power
consumption, but the greater the data delay
 Both the transmitter and the receiver must be
the same (very important).
07H
Write
CRYPT_H
key high byte（Default 0）
 Write only, read and return 0.
 Used for user encryption to avoid intercepting
airborne wireless data by similar modules.
 The module will internally use these two bytes
as a calculation factor to transform and encrypt
the over-the-air wireless signal.
08H
Write
CRYPT_L
key low byte（Default 0）
80H~
86H
Read
only
PID
7 bytes of product information
 product information: 7 bytes
7.3. Factory default parameter
Default parameter：62 00 00 00 00 00
Model NO.
Frequency
Address
Channel
Air data rate
Baud rate
Parity bit
TX power
T90-DTU
920MHz
0x0000
0x12
2.4kbps
9600
8N1
9dbm
8. Repeater networking mode
No.
Description
1
After setting the repeater mode by configuration, switch to the normal mode and the repeater starts working.
2
In the repeater mode, ADDH, ADDL are no longer used as the module address, but is correspondingly paired with the NETID. If the data
of one of the networks is received, it is forwarded to another network. The network ID of the repeater itself is invalid.
3
In repeater mode, the repeater module cannot transmit and receive data, and cannot perform low-power operation.
4
The user enters the other mode from mode 3 (sleep mode) or during the reset process, the module resets the user parameters during which
the AUX outputs low level.
Repeater networking rules:
1. Forwarding rules, the repeater can forward data in both directions between two NETIDs.
2. In repeater mode, ADDH\ADDL is no longer used as the module address, and it is used as a NETID forwarding pairing flag.
Figure:
① Primary repeater