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Siemens Building Technologies VISONIK DCS Functions and System Messages VVS18 CM2U8567E / 04.1999

Landis & Staefa Division Function CMB 2-39

2.7 CMB Circular Message Buffer

2.7.1 Initial Access and Handling

CTRL/P CMB

The circular message buffer is a reserved hard disk memory area of the VISONIK DCS.

As opposed to the Statistic Register, ALL SPONTANEOUS MESSAGES from the

VISONIK system are fed to the CMB before they are processed internally (e.g. output to

a printer, deposited in Statistic Register, etc.).

The circular message buffer can be compared to a post box. The post carrier (the

VISONIK DCS) places different important (message priorities) mailings (message

orders) there. These are then distributed to the addressed parties (message channels)

or, if without address, are not distributed ("other" message orders).

"Circular Buffer" means that new messages to a full buffer will overwrite the oldest

messages (first-in, first out buffer or "FIFO").

The buffer's capacity is large enough to cope with messages which arise during the

most recent hours up to the last few days, depending on how active the VISONIK DCS

has been.

An operator has access to the CMB at any time, and almost the same "Message

Categories" conditions apply as in Function STA. Such a dialogue can be broken off at

any time with Ctrl/E.

The following operations are now available for handling this function:

T8 09:06:04 Function=PNT : CMB

Operation=LIST : ?

0 LIST = List Buffer

1 LDAT = Review Messages by Date

2 LFCO = List Number of "ERSTA" Messages

3 LIRO = List Messages in Reverse Order

4 LOCT = List Buffer in Octal Code

5 DEL = Delete Outstanding Messages

Operation=LIST :

2.7.2 LIST, Print Message Buffer

Call up this function with:

PRO,CMB

Operation LIST outputs a listing of messages held in the CMB to the operator's terminal

or printer. All messages are arranged according to date.

Should the system date be set back (with Function DATE) all new buffer messages

which overlap other existing entries because of this set back in time, are tagged in the

listing with "Retrospective", placed next to the date.

Recorded Date : 05-10-96/Th Retrospective

Messages may be selected from the CMB using the following conditions:

–

Time interval

–

Message category

Function call-up

General

Post Box

Capacity

Main menu

Note: