Black Box PI125A-R2, PI126A manual Reading the LED

CHAPTER 4: Reading the LED

4. Reading the LED

Once your Converter is properly configured and installed, it should operate transparently—as if it were a standard cable connection. Operating power is derived from the RS-232 data and control signals; there is no “ON/OFF” switch.

The Converter indicates data activity by blinking. When the Converter has another message to report, the LED blinks according to the codes in Table 4-1below.

	Table 4-1. LED Codes
••-•—••-•—	Computer is sending data
•—•—•—	Serial device is connected; computer is not sending
	data
••—••—	Both serial and parallel devices are connected;
	computer is not sending data
•-•—•-•—	Printer not ready, data held in buffer
••••—••••	Computer ignoring flow control, data lost
Key:	Blink
•
-	Short pause

—Long pause

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