8.57 DS (Display subchannel)

8.57.1 Function

The DS command shows the subchannel information for a given device number.

8.57.2 Syntax

Descriptive

Diagram

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8.57.3 Parameter

devnum

The device number for which the subchannel information has to be displayed.

8.57.4 Examples

Example 1:

Display subchannel information for device 0AE0.

HHC00013I Herc command: 'ds 0ae0'

HHC02268I 0:0AE0 D/T3390 Subchannel Number[0028]

HHC02268I Path Management Control Word (PMCW)

HHC02268I IntParm:00F3F8A8

HHC02268I Flags:189D Dev:0AE0

HHC02268I LPM:80 PNOM:00 LPUM:80 PIM:80

HHC02268I MBI:0183 POM:FF PAM:80

HHC02268I CHPID0:0A 1:00 2:00 3:00

HHC02268I 4:00 5:00 6:00 7:00

HHC02268I Misc:00000001

HHC02268I Subchannel Status Word (SCSW)

HHC02268I Flags:08C0 SCHC:4020 DS:00 SS:00 Count:0001 CCW:7F01CB70

HHC02268I Device Status is Normal

HHC02268I Subchannel Status is Normal

Figure 115: DS command

8.57.5 Explanations

The information presented in the output from the Display Subchannel command is taken from the Sub-
channel-Information Block (SCHIB). The Subchannel-Information Block shows - beneath other areas - the
Path-Management-Control Word (PMCW) and the Subchannel-Status Word (SCSW). The format of the
SCHIB is shown on the following page.

Word

0

1

2

3

4

5

6

Path-Management-Control Word

7

8

9

Subchannel-Status Word

10

11

Model-Dependent Area /

Measurement-Block Adress

12

Model-Dependent Area

Figure 116: Subchannel-Information Block

Words 0-6 of the SCHIB contain the Path-Management-Control Word (PMCW). The format of the PMCW
is the following:

Word

0

Interruption Parameter

1

00

ISC

000

E

LM

MM

D

T

V

Device Number

2

LPM

PNOM

LPUM

PIM

3

MBI

POM

PAM

4

CHPID-0

CHPID-1

CHPID-2

CHPID-3

5

CHPID-4

CHPID-5

CHPID-6

CHPID-7

6

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0

0

0

0

0

0

F

X

S

Figure 117: Path-Management-Control Word

Legend:

ISC Interruption-Subclass Code

E Enabled

LM Limit Mode