NDC BETA LaserMike LaserSpeed Pro 8500-4, Instruction Handbook Manual

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LaserSpeed Pro 8500-4 Instruction Handbook: RS-232/RS-422 Communication 6-3
38400 50m
19200 100m
9600 200m
4800 200m
If you experience problems at high baud rates when using RS-232 over a long cable, try decreasing the baud
rate or switching to RS-422. The RS-422 port is designed for long distances at high baud rates. NDC Tech-
nologies recommends that the RS-422 port be used for high speed, long distance communications.
Note : High-baud rates are only required when acquiring length and speed data over the serial port.
If you are using the pulse outputs, and are only using the serial port for configuration and/or
diagnostics, you do not need a high baud rate. The maximum baud rate that will work for a
particular application is dependent on the length of the cable and the amount of electrical
noise in the environment. If you are using a high baud rate and are having problems com-
municating, try using LaserTrak to switch to a slower rate.
6.3 Baud Rate Indication on Power Up
The LS8500-4 indicates the selected baud rate setting for the RS-232 port at power-on, whenever a baud rate
setting is changed, and when the auto-baud feature causes a baud rate change on one of the ports. The
COMM LED flashes a number of times, indicating the selected baud rate. While the COMM LED is blinking,
the Valid LED indicates the selected framing (OFF for 7N2 and ON for 8N1.)
Number of COMM LED Blinks Baud Rate
1 230.4k
2 115.2k
3 57.6k
4 38.4k
5 19.2k
6 9600
7 4800
Valid LED State Framing
OFF 7 Data Bits, No Parity, 2 Stop Bits
ON 8 Data Bits, No Parity, 1 Stop Bit