UM0934 datasheet(84/113 Pages) STMICROELECTRONICS

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Management information base (MIB)

UM0934

84/113

Doc ID 17389 Rev 2

6.5.27

0085h (alarm repetition, alarm before indication, alarm reject window)

This object controls the alarm management (Section 7.2):

●

Alarm repetition: it sets the number of alarms that are sent when an alarm transmission

is requested. If the “alarm repetition” feature is enabled (Section 6.5.28), the same

number of alarms is sent also as soon as an alarm coming from another node is

received

●

Alarm before indication: number of alarms to be received before sending an

CMD_AlarmIndication to the host

●

Alarm reject window: number of alarm events to be rejected after an indication,

repetition or transmission.

The confirm message of a CMD_ReadDBRequest returns the current value without

changing it. The CMD_WriteDBRequest sets the threshold value and the confirm message

returns the value.

Read/write confirm data format:

The same as request.

6.5.28

0086h (alarm indication, repetition, SN indication disable)

This MIB parameter keeps three types of settings related to alarm management:

●

Alarm indication: bit to enable/disable the transmission of CMD_AlarmIndication to the

host

●

Alarm repetition: bit to enable/disable the alarm message repetition

●

Alarm S/N indication: bit to append, or not, the signal and noise levels to the

CMD_AlarmIndication sent to the host.

The ST7570 configured as Monitor in PHY mode always sends an alarm indication even if

the alarm indication bit is disabled;

The confirm message of a CMD_ReadDBRequest returns the current value without

changing it. The CMD_WriteDBRequest sets the coded values and the confirm message

returns them.

Table 131.

MIB object 0085h: Write request data format

Byte

Label

Description

Available range Factory default

Alarm repetition (

NTX)

Number of repeated alarm transmissions

0 .. FFh

Alarm before indication

(

NRX)

Number of alarm events to be received before

sending an alarm indication to the host

0 .. FFh

Alarm reject window

(

NREJ)

Number of alarm events to be rejected after a

transmission, reception or repetition of an

alarm.

0 .. FFh

Table 132.

MIB object 0085h: Write error data format

Byte

Returned value

Error description

ERR_ILLEGAL_DATA_COMMAND

Wrong number of data bytes

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