Specifications

HYDROLOGICAL SERVICES
DL3 100-021 IMP
Issue 2: 15/11/2005
4.1.6 Communications (COM, SEND, EV, RE, RETRY)
The communications of the RRDL-3 logger is set up by a combination of DIP switches and software
flags. The configuration of all logger communications parameters is displayed in the comms window.
(See section 3.1.4. for DIP switch setup)
On-line Help
COM?
Comms Window: Returns a summary of comms setup details
Syntax: COM<CR>
Command Example
COM
Site(SI): MELB LoggerID(ID): HS0012
Date(D): 03/29/94 Baud Rate {S1-1,S1-2}: 9600
Time(T): 03:09:03 Bits/parity/stop {S1-7}: 8/N/1
Time Offset(TO): 00:00 Handshake {S1-3,S1-4}: Xon/Xoff
Call Number 1(CN1): 036694154 Response On/Off(Re): On
Call Number 2(CN2): 036694158 Communication retries(RETRY): 3
Call Number 3(CN3): Message Scheduling (SEND): 09/5/01
Call1: +++~~~ATQ0^M/^M^JOK Clear1: ~~+++~~~~ATQ0H^M^M^JOK
Call2: ~~ATDT"N"^M/^M^JCO Clear2: ~~ATQ1^M~~~
Call3: Clear3:
Call4: Clear4:
The SEND command allows the programming of scheduled rain and river messages at regular
intervals. The SEND parameter comprises three parts, the frequency of transmission in whole hours
from midnight, an offset in minutes from the scheduled interval and the number of transmission
cycles in a 24 hour period. (Note that the offset allows many loggers in a network to record the
status on the hour, and dial through to a central computer at staggered times to alleviate the
communication bottleneck)
On-line Help
SEND?
Send: Allows scheduled transmission of rainfall & river
height mesg at specified intervals (hh/m/tt)
hh=hourly interval; m=minute offset; tt=no. of times
Syntax: SEND<CR> Displays send command
SEND=03/4/05<CR>Transmit a rain & river message at 03:04, 06:04,
09:04, 12:04 and 15:04