NOTE: This command is only available in certain Zebra printers
and based on the firmware installed in the printer. Please consult
the Command Quick Reference Chart (Appendix A) for a complete
listing of firmware that supports ^JB.
Sending the ~HM (Host Memory Status) instruction to the printer
immediately returns a memory status message to the host. Use this
instruction whenever you need to know the status of the memory.
When the Host Memory Status Command, ~HM, is sent to the Zebra
printer, a line of data containing three numbers is sent back to the
Host. The information contained in that line is described here.
Memory Status Line
1024,0780,0780
The first value is the total amount of RAM (Random Access Mem-
ory) installed in the printer. This number is in Kilobytes.
The second value is the maximum amount of RAM (Random Access
Memory) available to the user. This number is in Kilobytes.
The third value is the amount of RAM (Random Access Memory)
currently available to the user. This number is in Kilobytes.
CHAPTER 5 89
ZPL II Advanced Techniques
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