Gp-Gl Command Errors - GRAPHTEC MP303-04 User Manual

5.9 GP-GL Command Errors

In GP-GL command mode, the plotter only displays the error messages below if an error occurs for which
masking of the corresponding Error bit in the STATUS byte has been disabled using the " command.
Displayed message
E1.
COMM ERR
E 4 .
P A R A 0 V .
E 5 .
I / O E R R
I Canceling an error status
You can cancel an error status using any of the methods below, thereby setting the status of the corresponding
Error bit to zero.
(1) Execute a READ STATUS WORD 1 or READ STATUS WORD 3 command.
(2) Press the
E N T E R
NOTE
If a data format error has occurred, performing either Method (1) or (2) above while execution of the next
command is temporarily suspended enables that command to be executed.
(3) Initialize the plotter.
(4) Execute the INTERFACE CLEAR command.
NOTE
Method (3) or (4) clears all of the data in the plotter's buffer memory.
key. (Effective only in case of a data format error.)
A command error occurs if a hexadecimal code from
60H to 7EH is processed as a command character.
This message may also appear if the RS-232C inter-
face conditions are improperly set or if commands do
not match between the program and the plotter.
A command containing a parameter value that ex-
ceeds its permissible range was executed. Check the
permissible parameter range.
An input/output error occurs during the transfer of data
via the interface. With the RS-232C interface, this
message indicates that the parity or data length may
be improperly set. Check your interface conditions
once more.
5-11
Cause