ams Datasheet

Page 7

[v1-00] 2015-Apr-01

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HLS - 440P − Electrical Interface

Figure 7:

CAN Matrix Message Layout HLS-440P

System:

H2ES

Receiver

Name:

A: H2 Exhaust Sensor

B: H2 Ambient Sensor

ID: (hex)

A: 0x638 B:0x640

Datalengthcode:

8

Interrupt:

no

Rev. 3.3

Transceive:

Tx

Remote:

no

Repetition rate:

100 ms

MSB

LSB

variables

short name

datatype

resolution

phys. range / unit

raw range no value

b7

b6

b5

b4

b3

b2

b1

b0

Byte-No.

H2 Concentration

H2ES_Con

byte

0,05

0 .. 10 Vol.% H2

0 .. 200

255

Byte 0

Status

Sensor not ready

H2ES_not_ready

bit

b0

Byte 1

Error Category

H2ES_Err_Cat

2 bit

b2

b1

EMC correction active

H2ES_EMC_Corr

bit

b3

negative drift info

H2ES_neg_drift1

bit

b4

negative drift warning

H2ES_neg_drift2

bit

b5

negative drift alarm

H2ES_neg_drift3

bit

b6

Error 5

bit

x

SW Version y.z

H2ES_SW

byte

1

0 .. F . 0 .. F

0.. 255

y

yyyzzzz

Byte 4

HW Version

Type

H2ES_HW_Type

2 bit

1

0

0

b7

b6

Byte 5

HW revision

H2ES_HW_Rev

6 bit

1

0 .. 63

0 .. 63

b5

b4

b3

b2

b1

b0

Byte 5

Msg Counter

H2ES_Count

byte

1

0 .. 127

0 .. 127

255

to be incremented each message !

Byte 6

Safety Byte - CRC Byte 0 .. Byte 6

H2ES_Safety

byte

1

0.. 255

Byte 7

Definition Error Category :

Code

Name

Description

0

No Error

H2ES Sensor OK

1

Performance Error

General function still given (e.g. tolerance range may be increased to 1 % vol.)

2

Slight functional error

General function still given but high likelihood for upcoming severe error (sensor should be replaced)

3

Severe functional error

Severe error, general function NOT given anymore, sensor not longer trustable (= signal not available)

Definition HW Version Type :

Code

Name

Description

0

H2ES

Type A

H2 Exhaust Sensor

1

H2AS

H2 Anode Sensor

2

H2S

H2 Ambient Sensor

3

H2ES

Type B

H2 Stack Module Vent Sensor