Omega manual TTL to RS 232 adapter, Communication protocol from CL526 to a PC, Computer CL526

	6	5	4
		8	3
	7
	1	2
	Front view
	LINDY	CINCH
pin 1 :	brown	black
pin 2 :	red	green
pin 3 :	green	blue
pin 4 :	gray	gray
pin 5 :	purple	yellow
pin 6 :	blue	white
pin 7 :	orange	red
pin 8 :	yellow	brown

10.3TTL to RS 232 adapter

The cat. BB530001 TTL to RS232 adaptor consists of a cable to which are connected a male mini DIN connector (for the CL526) and a DB 25 connector, that contains the electrical circuitry (for the PC).

The basic circuit and connections are as follows:

TTL to RS 232 converter

+ 5 V

10 µF, 16 V

10 µF, 16 V

+

10 µF, 16 V

IBM - PC

+

6

2

16

10

CL526

D

Tx

B

Tx

2

11

14

Rx IBM

Rx

5

Rx

12

13

Tx IBM

3

Ground

IBM

2

1

ICL 232

7

+

+ 5 V

10 µF, 16 V

TSC 232

Mini-Din

3

4

+

10 µF, 16 V

5

158

10.4Communication protocol from CL526 to a PC

The exchange of information when a CL526 is interconnected with a PC are as follows:

COMPUTER REQUEST
Computer		CL526
Tx IDNAME	_	Rx IDNAME	Proceed if name acknoledged
Rx IDNAME	ß	Tx IDNAME	If not, do not answer
Tx Instruction	_	Rx Instruction
Rx Instruction	ß	Tx Instruction
Tx char	_	Rx char
Rx DATA 1	ß	Tx DATA 1
Tx char	_	Rx char
Rx DATA 2	ß	Tx DATA 2

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