Talgil Computing and Control LTD RF-MODULE-45 사용자 설명서
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second by second. The red LED of the SLAVE is constantly ON
. The rate of
communication becomes once per second. Each second the Master transmits to
the RTU the signal strength picked up by the Master from the RTU and the RTU
responds by transmitting to the Master the signal strength picked up by the RTU
from the Master. Listening (by the RF Ear) to the exchange of information between
the Master and the RTU under test, one can tell exactly how they hear each other.
00:09:59(097) M->X (15)01 01000010(66) TE AA RSSI=66
00:09:59(147) M<-X (15)01 01000001(65) TR OK RSSI=66
The MASTER will remain in TEST mode until receiving an END OF TEST signal
from the RTU (as a result of removing jumper 15) or until the RF TEST is disabled
by the user at the host controller.
the RTU the signal strength picked up by the Master from the RTU and the RTU
responds by transmitting to the Master the signal strength picked up by the RTU
from the Master. Listening (by the RF Ear) to the exchange of information between
the Master and the RTU under test, one can tell exactly how they hear each other.
00:09:59(097) M->X (15)01 01000010(66) TE AA RSSI=66
00:09:59(147) M<-X (15)01 01000001(65) TR OK RSSI=66
The MASTER will remain in TEST mode until receiving an END OF TEST signal
from the RTU (as a result of removing jumper 15) or until the RF TEST is disabled
by the user at the host controller.
3.4
WHEN LOOSING COMMUNICATION
The reaction of the RTU in case of losing communication with the host can be
initially programmed. The following options exist: 1) to leave the outputs as they are
2) to shut down the open outputs after a predefined delay (Autoclose). Every 30
seconds the unit will try seeking the communication signal of the MASTER. During
this process every 15-second a double beep
initially programmed. The following options exist: 1) to leave the outputs as they are
2) to shut down the open outputs after a predefined delay (Autoclose). Every 30
seconds the unit will try seeking the communication signal of the MASTER. During
this process every 15-second a double beep
will sound, and every 30 seconds
the red
LED of the SLAVE
will turn on for 10 seconds indicating that the receiver
is open trying to pick up the communication signal. This will continue for 1 hour and
then for energy saving purposes the RTU instead of seeking communication every
30 seconds will start seeking communication only once every hour. When the
communication signal is regained, the RTU returns to its normal state.
then for energy saving purposes the RTU instead of seeking communication every
30 seconds will start seeking communication only once every hour. When the
communication signal is regained, the RTU returns to its normal state.
Notice that if the MASTER was OFF for more than an hour, then when it
is turned ON again, the RTUs may not respond immediately to the calls
of the MASTER, because they are in energy saving mode. It may take
an hour before they start responding. They can be forced to exit energy
saving mode by pushing the RESET button of the RTU.
is turned ON again, the RTUs may not respond immediately to the calls
of the MASTER, because they are in energy saving mode. It may take
an hour before they start responding. They can be forced to exit energy
saving mode by pushing the RESET button of the RTU.
3.5
TESTING INPUTS AND OUTPUTS
During test mode the inputs and outputs are tested one by one. The input and
output to be tested is selected by dipswitch block SW6 as follows:
output to be tested is selected by dipswitch block SW6 as follows:
SW6
Input/ Output
under test
000
1
100
2
010
3
110
4
001
5
101
6
011
7
111
8
TE=Test Enabled
TR=Test Request
Signal strength of the RTU picked up by the Master
Signal strength of the Master picked up by the RTU