Supplementary documentation BM 100 A with PROFIBUS-PA
KROHNE Messtechnik GmbH & Co. KG · Ludwig-Krohne-Str. 5
R
D-47058 Duisburg
7/7
Tel.: 0203-301 309
R
Fax: 0203-301389 · e-mail: [email protected]
2.4 PROFIBUS-PA connection
Connect the bus cable as shown in the figure.
•
Connect cable cores to terminals 4 and 4.1.
•
Polarity reversal will not have any effect.
•
The cable shield should be connected with
minimum length to the ground PE.
•
The equipotential bonding conductor must be
connected to the device, if necessary via the
outer U-clamp ground terminal.
Power
Supply
Fieldbus
Current
Output
PROFIBUS-PA with Current Output
4-20mA
U=8-30V
+
-
Shield
PROFIBUS-
PA
5
6
4 4.1 4.2
11 12
PE
3. Menu settings for PROFIBUS-PA
For a detailed description please check the Installation and Operating Instructions manual of the device. The
following settings need to be made for operation of the BM 100 A on a PROFIBUS-PA network. Note that the service
“set slave address” is not being supported. Therefore the address can only be set by way of the local display and
operator interface.
Function (Fct.)
Input range
Description
1.6.1 BAUDRATE
Select
19200 Bd.
This is the baudrate of the internal communication interface of the device
(not PROFIBUS-PA). The value must not be changed.
1.6.2 ADDRESS
Input
0 ... 126
Settings out of the range will be ignored. If out of range 126 will be used as
default value.
Address can be changed via local display or via Profibus.
The Profibus address can be changed via the Profibus service “Set_Slave_Address”. The input range is 0...125
according to the Profibus specification. Address 126 is the default address and cannot be set via Profibus.
4. Technical data
, PROFIBUS Ident-No. EE01
Hardware
Physical
to IEC 61158-2 and the FISCO model
Bus characteristics
9... 30 V; 0.3 A max. ; 4.2 W max.
Base current
10 mA
FDE
yes: separate fault disconnection electronics
provided
Fault current
6 mA; (fault current = max. continuous
current – base current)
Starting current
lower than base current
”Ex” approval
EEx ia IIC T6 or EEx ib IIC/IIB T6 in
conformity with the FISCO model
Connection
independent of polarity
Software
GSD
all KROHNE GSD files supplied on diskette
Device profile
complete implementation of Profile B, V2.0
Functional blocks level [m], distance [m], in addition volume [m
3
]
as cyclic value plus status
mentioned units are default units
Address range
0-126, default 126,
“set slave address” not supported
Operator control
local display and operator interface at device
SAP`s
1; typically the number of service access points
is equal to the number of class 2 masters
(operating tools) which can be operated
simultaneously
