How to clear buffer with ZPL II [Zebra GX420d]

[Wiktor]

In documentation of ZPL II language there is command "~JA" which allow to clear all jobs in buffer.

Unfortunately it seems to not working on Zebra GX420d ( but I can't also find any word about it in printer specification ).

I can print labels with sending for example this string to printer :

PUT
"^XA" SKIP
"^MMT" SKIP
"^LL1279" SKIP
"^PW799" SKIP
"^LS0" SKIP
"^BY5,3,387^FT633,947^B2B,400,Y,N,Y" SKIP
"^FD>:" v_value FORMAT 'x(8)' "^FS" SKIP
"^FT133,707^A0B,56,81^FH\^FD" v_value "^FS" SKIP
"^FT131,1100^A0B,56,81^FH\^FDVALUE:^FS" SKIP
"^PQ1,0,1,Y^XZ"
SKIP.


Then if there is more then 2 labels in buffer i try to clear buffer with :

PUT
"^XA" SKIP
"~JA" SKIP
"^XZ" SKIP
.


Without result.

I tried also only PUT "~JA" SKIP .

Again without result.

I cannot find any information why it's not working or how to make this working with Zebra GX420d.

Can You help me? Maybe this is not possible with this printer.

Thank You for all help.

Best Regards, Wiktor

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