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LED Name
Description
MCNF
Main CPU
Configuration LED
Bicolor LED (Red, Green)
SI1 TX
STS Port 1 – TX (transmit)
Green LED
SI1 RX
STS Port 1 – RX (receive)
Green LED
SI1 CM
STS Port 1 – CM (channel
monitor)
Green LED
E1 LNK
Ethernet Port 1 (link)
Green LED
E1 RX
Ethernet Port 1 (receive)
Green LED
EXP
Expansion address LEDs
ADDR
Green LED
x1, x2, x4,
x8
Status
This LED reflects the state of the CONF LED
in the main CPU:
OFF – Configuration was not loaded in the
main CPU.
Green - Configuration was loaded in the main
CPU.
Red - Configuration error in the main CPU.
This LED is only relevant after the main CPU
has completed its startup.
ON – Transmitting Data
ON – Receiving Data
ON – Channel Monitor is ON.
ON – Network Connected
In case of RAM test, see Table 17-3.
ON – Receiving Data
In case of RAM test, see Table 17-3.
Reflects the expansion address set in the
rotary frame number selector switch. The
four LEDs together form the binary
representation of the addresses 1-D. See
Figure 17-3.
During module startup, the LEDs reflect
communication errors. See Table 17-2.
17-13
Expansion Module
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