Endress+Hauser Proline Promag L 400 - Cyclic Data Transmission; Block Model

Proline Promag L 400 PROFIBUS DP System integration
Endress+Hauser 69
• If the Promag 400 PROFIBUS DP is acyclically configured via an operating program
(Class 2 master), access is directly via the block structure or the parameters of the
measuring device.
• If parameters have been changed in the device to be replaced (Promag 50
PROFIBUS DP or Promag 53 PROFIBUS DP) (parameter setting no longer
corresponds to the original factory setting), these parameters must be changed
accordingly in the new replacement Promag 400 PROFIBUS DP via an operating
program (Class 2 master).
Example
The setting for low flow cut off has been changed from mass flow (factory setting)
to corrected volume flow in a Promag 50 PROFIBUS DP currently in operation. This
device is now replaced by a Promag 400 PROFIBUS DP device. After replacing the
device, the assignment for the low flow cut off must be changed manually in the
Promag 400 PROFIBUS DP, i.e. to corrected volume flow, to ensure the measuring
device behaves identically.
Replacing the measuring devices without changing the GSD file or restarting the
controller
In the procedure described below, the device can be replaced without interrupting ongoing
operation or restarting the controller. However with this procedure the measuring device is
not fully integrated!
1. Replace the measuring device Promag 50 PROFIBUS DP or Promag 53 PROFIBUS DP
by the Promag 400 PROFIBUS DP.
2. Set the device address: The same device address that was set for the Promag 50,
Promag 53 or PROFIBUS DP Profile GSD must be used.
3. Connect the Promag 400 PROFIBUS DP.
If the factory setting had been changed on the replaced device (Promag 50 or Promag 53),
the following settings may need to be changed:
1. Configuration of the application-specific parameters.
2. Choice of process variables to be transmitted via the CHANNEL parameter in the
Analog Input or Totalizer function block.
3. Setting of the units for the process variables.
9.3 Cyclic data transmission
Cyclic data transmission when using the device master file (GSD).
9.3.1 Block model
The block model shows which input and output data the measuring device makes available
for cyclic data exchange. Cyclic data exchange takes place with a PROFIBUS master (Class
1), e.g. a control system etc.
Measuring device Control system
Transducer
Block
Analog Input block 1 to 4 (→  70) Output value AI →
PROFIBUS DP
Totalizer block 1 to 3 (→  71)
Output value TOTAL →
Controller SETTOT ←
Configuration MODETOT ←
Analog Output block 1 (→  73) Input values AO ←
Discrete Input block 1 to 2 (→  73) Output values DI →