GarettCom 5843HRT User Manual page 16

In Point-to-Point operation, the communication logic (control software) of the IED's must manage:
1) The transmission of data signals.
2) The receipt of data signals.
3) Any "handshaking" required must be accomplished through software.
2.1.1 Installation
1. Set the DTE/DCE Switch to the appropriate position for each Link/Repeater and its respective IED.
2. Set the Repeat Switch on all of the units to the "OFF" position.
3. Connect the Link/Repeater to the IED's RS-232 or TTL communication port (including any adapter
that may be needed).
4. Connect the Fiber Optic Cables (T of one device to R of the second device).
5. Connect power to the Link/Repeater as follows:
A)
B)
M aster
T R
COM
2 5 3
FIGURE 6. Point-to-Point Configuration
If the unit is to be powered through the D-connector (9 to 15 VDC on pin 9 referenced to pin
5), then the unit is energized when it is connected to the D-connector (the power LED will
illuminate).
Connect power leads to the power connector and then energize the power source. The unit
is now powered (the power LED will illuminate).
APPLICATION NOTE
T
3
DT E
DCE
ON
OFF
2-2
Models 5843, 5844, 5843S and 5844S
Slave
R
COM
5 2
DTE
DCE
ON
OFF
RS232 or TTL