Parker PDHX-E Series User Manual page 56

[4] The E command is the enable RS-232 command which can easily be miss-typed as the F
command which will lock out the keyboard. Cycling the power will not cure this problem
since SV cannot be typed following a keyboard lock out.
[5] The <space>1 in <space>1R is important. It sets axis 1 as the echoback device (as
would <carriage return>1). If you make a typing error, such as TRD<space>3000 instead of
TRD3000 the <space>3 sets axis 3 as the echoback device, where R can be any command.
Certain 'tidy up' commands can be useful. For example:
• If you are not getting the typed characters echoed back you may need to use the SSA0
command.
• To get a prompt ($ or >) you may need to use the EX1 command.
• To get out of a $ prompt (indicating a sequence definition) type XT.
• If buffered commands are being ignored, type S in case the indexer is busy. You
should avoid typing Z or cycling the power.
In summary:
• Don't type CTRL-S
• Avoid accidental use of the command F
• Don't address a non-existent axis
• Don't rubout a device address
• Type carefully
None of the above conditions is an error so the status LED on the Controller will not indicate
a fault and the axis may well be energised or even moving.
Programming With the RP240
Prompting an Operator or Displaying Information
In many motion control applications, the most important requirement is the operator interface.
Presenting information to an operator in a desired format is often difficult. The RP 240 has
two visual indicators to help present information to the operator . The simplest indicator is
the 8 LEDs on the panel. These LEDs can be turned on or off with the DLED command. The
LEDs can be used in conjunction with the outputs to show the state of an output, or they can
be used to show status, such as motor moving, specific sequences in progress, etc.
If a DLED10001011 command is issued, the LEDs shown below would be illuminated. These
eight LEDs can be labelled, using the slide in card provided, to represent cycle status, output
status, etc.
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