Denso RC5 Specifications Page 52

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8.2.1 Names and Functions of Slave Board Components
(A) Status indicator LEDs
The status indicators MS and NS ("A" in the figure given on the previous page) can
light or flash in green or red. Each of the ON, flashing, and OFF states of those
indicators shows the module or network status as listed below.
The flashing interval is once per second (0.5 second of ON and 0.5 second of OFF).
LED name Color State Definition Explanation
Normal state
The unit works normally.
Green
Setup not completed
Reading the DIP switch settings.
Fatal error
Hardware failure.
Red
Recoverable error
Wrong DIP switch settings, etc.
MS
(Module
Status)
No power supplied
No power is supplied to the DeviceNet module.
Resetting data.
Waiting for initialization.
Communications link
established
The network is working normally. (The line is
connected.)
Green
Communications link
not established
The network is working normally, but the line is not
connected yet.
Fatal communications
error
The unit detects any error disabling
communication on the network.
Node address double-assigned.
"Bus off" detected.
Red
Recoverable
communications error
Communications error in some slaves.
NS
(Network
Status)
Network power
supply failure
Not connected to the master unit.
Communications line broken.
: ON
: Flashin
g
: OFF
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