Meanings and Values of BSC 3270 Parameters Defined in Class 13

Parameters displayed	Meaning of parameters	Possible values
1
.
.	BSC 3270 station address	0 to 31
.
32

Programming principle of a BSC 3270 line

Note In the programming example, the stations and the controllers are defined by a control unit number. Each control unit number has fixed addresses which identify the unit in the BSC 3270 protocol frame. See the table below.

Example:

Controller 0 is identified in a polling frame by its address 20 (ASCII) or 40 (EBCDIC)
Controller 0 is identified in a select frame by its address SD (ASCII) or 60 (EBCDIC).
Station 21 is identified in a select or text frame by its address 4E (ASCII) or D5 (EBCDIC).

Table F-1: BSC 3270 Addresses

CONTROL UNIT

POLL ADDRESS

SELECT ADDRESS

DEVICE ADDRESS

ASCII EBCDIC ASCII EBCDIC ASCII EBCDIC

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

20

41

42

43

44

45

46

47

48

49

5B

2E

3C

28

2B

21

26

4A

4B

4C

4D

4E

4F

50

51

52

5D

24

2A

29

3B

5E

40

C1

C2

C3

C4

C5

C6

C7

C8

C9

4A

4B

4C

4D

4E

4F

50

D1

D2

D3

D4

D5

D6

D7

D8

D9

5A

5B

5C

5D

5E

5F

2D

2F

53

54

55

56

57

58

59

5A

7C

2C

25

5F

3E

3F

30

31

32

33

34

35

36

37

38

39

3A

23

40

27

3D

22

60

61

E2

E3

E4

E5

E6

E7

E8

E9

6A

6B

6C

6D

6E

6F

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

7A

7B

7C

7D

7E

7F

20

41

42

43

44

45

46

47

48

49

5B

2E

3C

28

2B

21

26

4A

4B

4C

4D

4E

4F

50

51

52

5D

24

2A

29

3B

5E

40

C1

C2

C3

C4

C5

C6

C7

C8

C9

4A

4B

4C

4D

4E

4F

50

D1

D2

D3

D4

D5

D6

D7

D8

D9

5A

5B

5C

5D

5E

5F

Figure F-1: Programming a BSC 3270 Line

Profiles of class 12:

FastPad (1), line 8: VIP controller profile (profile 50)
FastPad (2), line 5: VIP Host profile (profile 51).

Programming of line 8 on FastPad (1) side:

Class 12, recurrence 8 (profile 50)

: Parameter 90 = 02 (number of controllers)
: Parameter 91 = 43 (position of 1st controller)

Class 19 controller table:

· Class 19 parameter 42 (1st controller):
	1st byte:	03 (No. of auto-call), see class 8
	2nd byte:	00 (1st controller address)
	3rd byte:	04 (number of stations)
	4th byte:	13 (position of 1st station),
		class 13: extension line connection
		parameters (recurrence 8)
		Profile 60 (BSC 3270):
		Parameter 13-11
		Parameter 14-12
		Parameter 15-13
		Parameter 16-14

· Class 19 parameter 43 (2nd controller):
	1st byte:	03 (No. of auto-call), see class 8
	2nd byte:	01 (2nd controller address)
	3rd byte:	03 (number of stations)
	4th byte:	07 (position of 1st station),
		parameter 7-21
		parameter 8-22
		parameter 9-23

To program line 5 on FastPad (2): according to the same principle as FastPad (1), the controllers and stations connected to the host have to be described.
Class 12, recurrence 5 (profile 61)

: parameter 90 = 02 (number of controllers)
: parameter 91 = 43 (position of 1st controller).

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