Supported J1939 Functions - Pepperl+Fuchs MWC25M-L2M-B20 Series Manual

MWC25M-L2M-B20 series
Product Description
2.5

Supported J1939 Functions

The device has a standardized J1939 interface to SAE J1939-21 and SAE J1939-81 specifica-
tions. Usable objects of object directory OV are listed in this manual.
The address is assigned with "Address Claiming" at start-up. The start value is 128. If the claim
is unsuccessful, the address is incremented and the "Claiming Process" is restarted.
The standard transfer speed is 250 kBit/s. A parameter can also be used to set 500 kBit/s. SAE
J1939 only allows these two transmission speeds.
Note
A DBC file (database container) is available for integrating and parameterizing the radar
sensor. You can download it from www.pepperl-fuchs.com, on the product page for the
MWC25M-L2M-B20 series.
Note
This device does not have an internal terminator. If required, this can be implemented
externally via a T-piece at the end of the bus (120 ohms).
Available J1939 Functions
• Address Claiming
• Command address
• Proprietary B PGN (Parameter Group Numbers)
(see chapter 6.2.1)
• CAM11/CAM21 PGN
• CEM PGN
Vendor-specific properties and functions
• Save and restore functions via parameters
• Address Claiming
• Status and fault indication
• Operating hours
• Application-specific tag, function tag, location tag
The radar sensor of the MWC25-L2M-B20 series supports "cyclic operation" mode. The dis-
tance and velocity values are sent cyclically every 100 ms (10 Hz) via the bus.
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