LaserSpeed 8000-3 Instruction Handbook

 

Appendix E: Troubleshooting Guide

 

 

 

few commands to lock into the new baud

 

rate.

 

 

When using a terminal program,

Terminal Program Settings The gauge terminates all transmissions

all the data from the gauge prints

with a carriage return. Both a carriage

on the same line.

return and a linefeed are required for

 

HyperTerminal to start printing the next

 

transmission on a new line.

 

 

Enable the "Append line feeds to

 

 

incoming line ends" option in

 

 

HyperTerminal.

 

 

 

 

When using a terminal program,

Terminal Program Settings

The gauge expects all commands to end

only the first command after the

 

with a carriage return. If you have the

gauge is turned on returns a

 

"Send line feeds with line ends" setting

response.

 

checked in HyperTerminal, when

 

 

you type the command, you are

 

 

transmitting "Z<CR><LF>" instead of

 

 

"Z<CR>", where <CR> is a carriage

 

 

return, and <LF> is a linefeed. The

 

 

gauge expects all commands to end with

 

 

a <CR>.

 

 

 

When you transmit:

 

 

Z<CR><LF>

 

 

 

Z<CR><LF>

 

 

 

Z<CR><LF>

 

 

 

Z<CR><LF>

 

 

 

The gauge sees it as:

 

 

Z<CR>

ok, gauge responds

 

 

<LF>Z<CR>

ignored

 

 

<LF>Z<CR>

ignored

 

 

<LF>Z<CR>

ignored

 

 

Because the first character in the

 

 

received command is invalid, each

 

 

command after the first one is ignored.

 

 

Disable the "Send line feeds with line

 

 

ends" option in HyperTerminal to fix.

 

 

 

Communciation problems:

Wiring

Make sure you are connected to the User

Bad characters, intermittent

 

Ground (pin 11,19,21) and not the Power

failures, etc…

 

Ground (pin 12,13).

 

If using RS-232 over a long

Switch to a lower baud rate

 

cable, the baud rate may

 

too high.

 

 

Switch to RS-422 for

RS-422 uses differential signals that have

Part No. 93463 / Drawing No. 0921-01561

Page 208 of 221

Revision A (Sep 2007)

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Image 208
Laser LS8000-3 manual Zcrlf