ControlWave Express Instruction Manual (CI-ControlWave Express)
Figure 5-6. CPU/System Controller LEDs
Table 5-1. LEDs on Piggy-back LED board
LED Color Description
PG RED ON = Power good
WD RED ON = Watchdog condition – program crash; OFF = Normal operation
IDLE RED ON = CPU has free time at end of execution cycle. Should be on
frequently.
OFF = CPU overloaded
STAn RED See Figure 5-7 and Table 5-1 for LED patterns and explanations
TX1 RED Transmit activity on COM1
RX1 RED Receive activity on COM1
TX2 RED Transmit activity on COM2
RX2 RED Receive activity on COM2
TX3 RED Transmit activity on COM3
RX3 RED Receive activity on COM3
Receive GREEN Receive activity on Ethernet port
Transmit YELLOW Transmit activity on Ethernet port
Revised Mar-2011 Service & Troubleshooting 5-9
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