Rockwell Automation 2705-DN42 DeviceNet Interface Communicaton Board - Manual (Page 7)

7
Operations
The RediStation has 3 modes of operations:
•
Powerup / Reset mode
•
Run mode
•
Error mode
Powerup/Reset Mode
During a powerup or reset, the RediSTATION:
1. Clears outputs (turns outputs off) and sets the LED indicator to
solid red.
2. Performs powerup diagnostic tests including:
– EPROM checksum test
– RAM read/write test
– Watchdog timer test
– Serial number verification
If any test fails, the outputs remain off and the LED remains solid
red. You must cycle power to recover from a power-up
diagnostic test failure. Repeated failures indicate a faulty unit.
3. Reads and stores the DIP switch settings.
Important: DIP switches are only read in powerup or reset
mode. Changes to DIP switch settings under power cause an
error.
4. Performs a duplicate node address check to verify that another
node is not assigned the same DeviceNet address as the
RediSTATION device.
If a duplicate node error occurs, the outputs turn off and the status
led is set to blinking red. You must cycle power to clear the error.
During a powerup or reset, the LED is red. If the powerup or reset is
successful, the RediSTATION enters run mode and the LED flashes
green.
Run Mode
After a successful powerup or reset, the RediSTATION enters run
mode and operates as a slave device to a master device. In run
mode, the:
•
controller scans switch inputs and writes lamp outputs.
•
station accepts output messages and poll messages from other
nodes on the DeviceNet network.
•
station monitors outputs for underloads/overloads.
Modes of Operation