DIGITAL TRANSDUCER
Configuration and Modbus Interface
PRELIMINARY
PCS III Technical Description CANopen 1r1 UK 310715.docx
09/02/2021
S2Tech srl
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17.
Object Directory
The object directory of the CAN communication module in the transducer is divided into two
ranges which are represented in the following table. The data (measure) as well as the
configuration parameters are placed in the communication object.
17.1.
Communication Profile
The parameters which are critical for communication are determined in the communication profile.
This includes the data for manufacturer's product nomenclature, for identification, or the
parameters for object mapping.
Abbreviations used in Tables:
ro = read only
rw = read / write
UI8 = Unsigned8
UI16 = Unsigned16
UI32 = Unsigned32
I32 = Signed32
VS = VisibleString
17.1.1.
CANopen Setup
CANopen connection is always internally allocated to slot N.15, thus CANopen volatile parameters
are stored at address 0x200F, while non-volatile parameters are stored at Index 0x210F.
NOTE: ALL PARAMETERS ON CANOPEN ARE ACCESSED AS 32 BITS UNSIGNED
INTEGERS, independently of the internal size.
CANopen standard communication profile is fully implemented, as described in the CiA DS301
document; the transducer can be widely configured; an EDS document has to be made for each
configuration.
