EIA-ASCII-ISO encoding

trivia

• old NC-maschines might use EIA or ISO 'paper-tape' encoding on serial-communication

links

• https://www.grecosystems.com/wp-content/uploads/2015/04/CNCMinifileOM.pdf (appendix 'F', page 61-62)
• https://i-logic.com/serial/punchholes.htm
• https://i-logic.com/serial/eia.htm
• https://books.google.de/books?id=4bJJbIaOgcYC&lpg=PA12&ots=pwQCwkgdWm&dq=iso%20eia%20paper%20tape%20cnc&hl=de&pg=PA16#v=onepage&q=iso%20eia%20paper%20tape%20cnc&f=false

conversion charts

char	EIA	ASCII	ISO	remark
	10	20	A0	(space)
$	80	24	24	EOB IN EIA
%	5B	25	A5	EOR – Rewind Stop in ASCII
+	70	2B	2B
,	3B	2C	N/A	(Comma)
-	40	2D	2D	(Minus)
.	6B	2E	2E	(Period)
/	31	2F	AF
0	20	30	30
1	01	31	B1
2	02	32	B2
3	13	33	33
4	04	34	B4
5	15	35	35
6	16	36	36
7	07	37	B7
8	08	38	B8
9	19	39	39
=	0B	3D	BD
A	61	41	41
B	62	42	42
C	73	43	C3
D	64	44	44
E	75	45	C5
F	76	46	C6
G	67	47	47
H	68	48	48
I	79	49	C9
J	51	4A	CA
K	52	4B	4B
L	43	4C	CC
M	54	4D	4D
N	45	4E	4E
O	46	4F	CF
P	57	50	50
Q	58	51	D1
R	49	52	D2
S	32	53	53
T	23	54	D4
U	34	55	55
V	25	56	56
W	26	57	D7
X	37	58	D8
Y	38	59	59
Z	29	5A	5A
CR	80	0D	8D	(Carriage Return) EOB in EIA
LF	**	0A	0A	(Line Feed) EOB in ASCII (ISO)
HT	33	09	09	(Tab)
BS	2A	08	88	(Backspace)
&	0E	26	A6
(	7C	28	28
)	71	29	A9
:	10	3A	3A
@	6D	40	C0

char EIA ASCII ISO note:
   10 20 A0 (space)
 $ 80 24 24 EOB IN EIA
 % 5B 25 A5 EOR – Rewind Stop in ASCII
 + 70 2B 2B 
 , 3B 2C N/A (Comma)
 - 40 2D 2D (Minus)
 . 6B 2E 2E (Period)
 / 31 2F AF 
 0 20 30 30 
 1 01 31 B1 
 2 02 32 B2 
 3 13 33 33 
 4 04 34 B4 
 5 15 35 35 
 6 16 36 36 
 7 07 37 B7 
 8 08 38 B8 
 9 19 30 39 
 = 0B 3D BD 
 A 61 41 41 
 B 62 42 42 
 C 73 43 C3 
 D 64 44 44 
 E 75 45 C5 
 F 76 46 C6 
 G 67 47 47
 H 68 48 48 
 I 79 49 C9 
 J 51 4A CA 
 K 52 4B 4B 
 L 43 4C CC 
 M 54 4D 4D 
 N 45 4E 4E 
 O 46 4F CF 
 P 57 50 50 
 Q 58 51 D1 
 R 49 52 D2 
 S 32 53 53 
 T 23 54 D4 
 U 34 55 55 
 V 25 54 56 
 W 26 57 D7 
 X 37 58 D8 
 Y 38 59 59 
 Z 29 5A 5A 
CR 80 0D 8D (Carriage Return) EOB in EIA
LF ** 0A 0A (Line Feed) EOB in ASCII (ISO)
HT 33 09 09 (Tab)
BS 2A 08 88 (Backspace)
 & 0E 26 A6 
 ( 7C 28 28 
 ) 71 29 A9 
 : 10 3A 3A 
 @ 6D 40 C0

pySerial

• https://pyserial.readthedocs.io/en/latest/tools.html#module-serial.tools.miniterm

ubuntu

prerequisites

• sudo apt-get install socat

• sudo apt install python-pip

• pip install pyserial

virtual null-modem

• terminal[1]

  • sudo socat PTY,link=/dev/ttyS10 PTY,link=/dev/ttyS11

hack encodings

• sudo cp usr/lip/python2.7/encodings/hp_roman8.py usr/lip/python2.7/encodings/iso_paper.py

• edit iso_paper.py as needed ...

run miniterm

• terminal[2]

  • sudo python -m serial.tools.miniterm --echo --encoding hexlify

• terminal[3]

  • sudo python -m serial.tools.miniterm --encoding iso-paper

windows

prerequisites

• ...

virtual null-modem

• e.g. https://www.virtual-serial-port.org/de/articles/top-6-virtual-com-port-apps/#2
  • install, set up and run in demo-mode

reference

• https://i-logic.com/dncserver/
  • install, set up and run in demo-mode

hack encodings

• ...

run miniterm

• ...