Delta DVP-20PM

10 Application of G-codes
Details about G-code instructions are explained in previous chapters. In this chapter, we will focus on
G-code applications which improve the usability by various G-code download methods and enhance
the operation stability by advanced G-code application (mainly used on dispensing machine).
The CNC (Computer Numerical Control) machines applying G-codes have the same operation methods
and functions, therefore the PLC program for CNC machine do not need to be modified for different
CNC machines.
Users only need to preset the source of G-codes: When the source is preset, the users can select one
of the 3 sources (HMI, memory card or PC) by HMI and perform the control requirement.
1. HMI: Editing and storing G-codes on HMI
2. Memory card: Converting the file on CAM software into G-codes, storing the G-codes in a memory
card and inserting the card into the slot on a CNC machine,
3. PC (NB): Directly downloading the G-codes into a CNC machine from a PC (NB).
10.1 Downloading a Program with PEP
When programs are downloaded to DVP20PM00M, the DVP20PM00M programs without PEP
protection will be cleared first then the new program will be downloaded to the program area without
PEP protection as below [Ox0 in (A), (B)]. Motion subroutines (G-codes) in DVP20PM00M are directly
called by O100 main program or P subroutines which are called by O100 main program. Therefore, to
prevent O100 or P subroutines from being cleared and making G-codes invalid, PEP settings are
usually enabled on O100 and P subroutine to protect the constant programs.
(A) No PEP protection
Original DVP20PM00M
programs
Clear the programs
Download new Ox
(B) With PEP protection
Original DVP20PM00M
programs
PEP setting
Clear the programs
Download new Ox
With PEP protection as above, constant programs O100 and P are maintained in DVP20PM00M, and
Ox0 (G-codes) which needs to be constantly updated is downloaded in the general program area
without PEP protection.
DVP-20PM Application Manual
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