ASCII = ESC p 0 25 250
Decimal = 27 112 0 64 240
HEX = 1B 70 00 40 F0
Consult your POS software documentation or contact your POS software provider to confirm where and how these codes should be entered. This varies between POS software.

Different software requires different ways of entering this information.
You may need to separate the following codes with commas, spaces, use
3 digits (ie 27=027), etc.
So 27 64 may get entered as
027,064 or 27 64 or 27,64 or +27 +64 etc.

Read any documentation that you have to assist in this.
These numbers are in decimal format. It may require Hex Decimal
(Ie 27 = 1B) Odds are the codes given below will work fine....

Insert the following codes in the INITIALLIZE PRINTER section
|=INITIALLIZE PRINTER=|
27 64

|=CUT PAPER==|
29 86 66 0

|=Open Drawer=|
27 112 0 64 240

So combined together, it should CUT the receipt and OPEN the drawer.
|=CUT PAPER==|=Open Drawer===|
29 86 66 0 27 112 0 64 240