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Siemens LMV5 Series Technical Instructions

Siemens LMV5 Series
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LMV Series Technical Instructions
Document No. LV5-10
00
SCC Inc. Page 3 Section 8
Example
Marking for data query
or end of reply with data format 10 / 9 bits
Waiting time = 3.5 characters * 100
0 * x bits / Baud rate
Baud rate [Baud] Data format [bit] Waiting time [ms]
9600 10 3.125
9 2.813
Data query process
Time diagram
A data query is made according to the
following time diagram:
where:
t0
Marking for end = 3.5 characters (time is dependent on the Baud rate)
t1
This time is dependent on internal handling; the maximum handling time is
dependent on the data type (internal and external data) and on the number
of data; for more detailed information,
see below!
t2
t2
20 ms
This time is required by the device to switch from transmitting back to
receiving; this time must be observed by
the master before a new data
query is made; it must always be observed, even if a new data query to
some other device is made
Communication during the slave’s internal handling time
During the slave’s internal handling time, the master i
s not allowed to make any data queries. The slave
ignores data queries made during this period of time.
Communication during the slave’s reply time
During the slave’s reply time, the master
is not allowed to make any data queries. Data queries made
during this period of time cause all data on the bus at this instant to be deleted.
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Siemens LMV5 Series Specifications

General IconGeneral
BrandSiemens
ModelLMV5 Series
CategoryControl Systems
LanguageEnglish

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