G&L MMC-A2, Hardware Manual

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MMC Profibus Option Module
138 MMC Hardware Manual G & L Motion Control Inc.
8.3 LEDs
The two configuration port LEDs and the two Profibus port LEDs are
described below.
Table 8-3: Description of Profibus Port LEDs
Profibus Port
LED Color State Definition
Network status
Green OFF Off-line
ON On-line, no physical layer or
data layer errors (or Profibus
cable not connected)
Red ON On-line, bus error (baud rate or
wiring problem)
Scanner status Green OFF No power or else reset
asserted, interface closed
ON Scanner communicating, data
exchanging, no slave device
errors
Flashing Scanner in start-up
Red ON At least one slave faulted
Orange ON Configuration (download)
mode
Configuration
Port IN
Red Flickering Data is being passed to the
module
OFF No data to the module
OUT
Red Flickering Data is being passed from the
module
OFF No data from the module