Specifications

Device Addressing
24 Connection to FOUNDATION Fieldbus IM/265/7/9/ADD/FF-EN_01
A
9 Device Addressing
When the models 265 / 267 / 269 FF Transmitter are connected on a FF bus, the Master has to
recognize them with a unique address in the world. For this reason, the FF specifications define
three different addressing levels that characterize the FF devices:
- The DEV_ID is the unique device identifier.
- The PD_TAG is the physical name of the device.
- The Node Address is the real node at which the device is connected on the bus. It is
automatically set by the Master (Primary LAS).
The most important one with the higher priority is the DEV_ID. This is a string of 32 characters
and must identify in a unique way each FF device in the world.
In order to fulfil this requirement the models 265 / 267 / 269 FF applies the following
mechanism:
- The first part of the string is of 10 characters, the Manufacturer Code "000320" and Device
Type code "0089" for 265, "008A" for 267 / 269.
- The second part of the string is of 12 characters and represent the device type identification;
"_2600T_TO___" for 265, "_2600T_MV___" for 267 / 269.
- The third part of the string is of 10 characters and is filled with the
TB_SENSOR_SERIAL_NUMBER read from the transducer database. This number is written
at factory configuration stage and it is assigned in a well defined way just to be sure to have
always different numbers.
Finally, the DEV_ID appears of 32 characters in this way
“0003200089_2600T_TO___xxxxxxxxxx”, where the entire “x” represents the Serial number.
Whenever an electronics replacement after an electronics failure is necessary, appear clear that
the device will be recognized on the network as before of the replacement. This is possible
because the transducer, which includes the serial number, remains unchanged and the DEV_ID
will be maintained the same as before of the failure.