Installation guide

Connecting an RR85 Repeater
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6.4 Reading the Network Indicators
The layout of the Repeater indicators is shown in Figure 62.
Modbus
Plus
Port 2
Modbus
Plus
Port 1
Power
OK
Figure 62 RR85 Repeater Indicators
The POWER OK indicator illuminates steadily when the Repeater has
normal power from the AC line and its internal power supply is
operating normally.
The Repeater has two indicators that show the communication status
at its two Modbus Plus ports. Each port’s indicator flashes when a
transmission occurs at the port.
The intensity of each port indicator reflects the relative rate of
transmission at the port. As the indicator illuminates during
transmission, this in turn reflects the relative amount of network
activity received at the opposite port. For example, if the Port 2
indicator is brightly illuminated, indicating that this port is highly
active, it shows that a high level of activity is being received from the
network section at Port 1.
If a port indicator fails to illuminate, or is illuminated only dimly, it can
indicate a very low level of activity on the opposite port’s cable.