System Configuration; Polled I/Omag 6000; I/O Description - Siemens SITRANS F M MAGFLO series Operating Manual

DeviceNet add-on module
4.2. System
configuration
4.3 Polled I/O
MAG 6000

4.3.1 I/O description

4. Commissioning
The system configuration of a DeviceNet master and a Siemens Flow Instruments flowmeter
can be split up into two parts.
The first part is the setting of DeviceNet communication related parameters. These are: baud
rate, station address/MAC ID and I/O assembly.
With the MAG 6000/MASS 6000 these parameters can be set by the local panel. None of these
parameters can be set by mechanical switches.
After the baud rate, station address/MAC ID and I/O assembly are set. A reboot at the flowmeter
is necessary in order for the changes to take effect.
After a reboot the second and larger area of a system configuration is the setting of application
related parameters. For offline configuration Siemens Flow Instruments provides you with English
EDS files. Contact your local Siemens Flow Instruments supplier or the internet for the EDS files.
Another important configuration parameter is the selection of communication mechanisms that
enable an efficient and responsive I/O system. The DeviceNet option for the MAG 6000/MASS
6000 allows the following communication mechanisms:
• Polled I/O
• Explicit messaging
The use of bit strobe I/O or change-of-state (COS)/cyclic I/O is not implemented in the DeviceNet
option and will lead to a malfunction if invoked.
The MAG 6000 has two different predefined I/O assembly instances for process data. The
default I/O transfer is shown in the drawing below with solid lines.
The dashed box shows the second I/O assembly instance where a status word is added to the
input area.
PLC
Following description is valid, if the MAG 6000 is set to 0 in the submenu „Assembly selection"
under DeviceNet. The master slave connection for a MAG 6000 consists of one control word
and six process data words. In the output area, word 0 (zero) is the control word sent to the
MAG 6000. In the input area, word 0 (zero) and word 1 represent the volume. Word 2 and 3
represent the actual value of totalizer 1. Word 4 and 5 represent totalizer 2. By selecting batch
functionality in the MAG 6000 the totalizer 2 value will change behavior. Then every time a
batch is started, this value is reset and will show the actual amount for the running batch.
The available I/O assembly instances are organized as shown in the drawing below:
Poll Set 0:
Poll Set 1:
SFIDK.PS.023.C2.02
PLC I/O area DeviceNet
C ontrol
Q W 000
IW 000
Status Status VO L
IW 001
Vol
IW 002
Vol
.
IW 003
Tot1
IW 004
Tot1
IW 005
Tot2/Batch
IW 006
Tot2/Batch
Control
VOL Tot1 Tot2/Batch
Status VOL Tot1
MAG 6000
Control
Tot1 Tot2/Batch
Control
Tot2/Batch
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