PISO-DNM100 DeviceNet Master API functions User’s Manual (Ver: 1.0) 2008/02/25
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2.4 Indicator LED
2.4.1
U
Green
U
LED
The [Green] LED indicates the firmware status in the PISO-DNM100.
There are 3 situations in [Green] LED.
(1). LED off:
This indicates that there are some errors on the bus or in the
firmware. The DeviceNet firmware is not running.
(2). LED twinkle:
This indicates that the CAN bus works fine. But there is no any slave
devices configuration in the EEPROM of the PISO-DNM100. The
DeviceNet firmware is waiting for configuration.
(3). LED on:
This indicates that the DeviceNet firmware is running. The
PISO-DNM100 is communicating with the slave devices.
2.4.2
U
Red
U
LED
The [Red] LED means Network Status. It indicates that there are errors on
the bus or there is any slave device's MAC ID collides with the
PISO-DNM100's MAC ID. There are two situations in [Red] LED.
(1). LED off:
This indicates that there is no error on the bus and about the MAC ID.
(2). LED twinkle:
This indicates that there are errors on the bus which maybe the
situations as shown bellow:
(a) The CAN connector doesn't connect to the slave devices.
(b) The power of the slave devices is off.
(c) The MAC ID collision between master and slave devices is occurring.