USER MANUAL
OM PROFI
|
9
2.
DESCRIPTION
OF COMMUNICATION
OM Profibus card parameters stored in EEPROM
(older version or selection of GSD file in menu - OLD)
Addr.
Record
value
Function
Manufact.
value
Note
3
131
TimeOut -
OM xxx
4
197…260 ms
Delay for reporting errors in communication with OM xxx instruments
X * 66 ms (inaccuracy from X – 1 to X)
4
132
TimeOut -
Profibus
76
aprox. 5 s
Delay for reporting errors in communication to ProfiBus
X * 66 ms (inaccuracy from X – 1 to X)
5
133
Transmiss.
delay
8
aprox. 0,6 s
Delay used for downloading in cycles or display projection
(66…131 ms) + X * 66 ms
6
134
Unused (Only for OMX ProfiBus)
7
135
Unused (Only for OMX ProfiBus)
10…29
138…147
Reserve
May be used to record values
(Max. 100 000 records (100k Write Cycles))
List of modes („Functions“)
„Function“ Function
Note
0
Downloading
values from OM
xxx instruments
Channel values are downloaded in cycles from the OM xxx instrument with set Address.
Between downloadings there is a delay inserted, which is set in „Transmission delay“ in EEPROM
of the OM Profibus card.
10…15
Displaying
numbers on OM
xxx instrument
Setting display onto decimal number value is repeated in cycles
(function 10 = w/o d.p., 5 = 5 decimal places)
After function termination (interrupted communication, change of address) the number stops
displaying itself after approx. 2,5 s
20
Inserting and
projecting deci-
mal number in
OM xxx instru-
ment
Functions are designed for OM xxxRS instruments, which are able to receive and
process the value (re-calculate, evaluate limit statuses, set the analog output, dis-
play the value in relevant format, change the display colour as per value size).
The value stays projected in the instrument until another value is recorded or the instrument
switches off.
30
Inserting and
projecting inte-
ger number in
OM xxx instru-
ment
Functions are designed for OM xxxRS instruments, which are able to receive and
process the value (re-calculate, evaluate limit statuses, set the analog output, dis-
play the value in relevant format, change the display colour as per value size).
The value stays projected in the instrument until another value is recorded or the instrument
switches off.
100
Projection of
text on display
Projection of text on OM xxx instrument display is repeated in cycles.
128
Projection of
OM xxx instrum.
identification
Projection of current OM xxx instrument identification ascertained after the Profibus card
is switched on.
129…130
229…230
Sending
OM command
Upon the change of function OM command is sent to RS 485 line. Functions 129 and 130
are waiting for response from OM xxx instrument. Received answer is stored in transmitted
telegramu.
131
Bulk parameter
downloading
The telegram area designed for data is completed with the EEPROM content of OM Profibus
card, in which the card‘s parameters are stored
132
Downloading
SW version
The telegram area designed for data is completed with SW identification of the OM Profibus card
e.g.: „V.1.1.2 - 11/16/07 16:47:20(B737)“, the brackets give a check sum of the card‘s program
memory
133
EEPROM
check sum
The telegram area designed for data is completed with a check sum of the EEPROM memory
in which the OM Profibus card parameters are stored. E.g..: „1327“
134
Downloading
counters
The telegram area designed for data is completed with service counters readings
(card‘s number of switch-on cycles and total running time) E.g.: „000012;000006“
No data is downloaded unless the „Flag“ value is set to 1 and the „Function“ and „Address“ values are not identical in both telegrams (the received and
the transmitted).
Similar rule applies to an executed command: unless the „Function“ and „Address“ values are not identical in both telegrams (the received and the
transmitted), the function is not performed
Summary of Contents for OM PROFI
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