ADF Web HD67432 Series, User Manual

Page: 19 / 32

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User Manual J1939 / Modbus Slave
Document code: MN67432_ENG Revision 1.100 Page 19 of 32
TRANSMIT J1939:
By pressing the “
Transmit J1939 ” button from the main window of SW67432 the window “Transmit J1939 Frames” appears (Fig. 6). This
section is used to define the J1939 messages sent by the converter.
The means of the fields of the table are:
In the field “ Priority ” the priority of the J1939 message is defined. In J1939 protocol, the priority is a number between 0 and 7. 0 is
the highest priority and 7 is the lowest;
In the field “ Data Page ” the data page of the J1939 messages is defined, the value is 0 or 1 (usually it is 0);
In the field “ PGN ” the PGN of the J1939 message to be written from Modbus is defined (in J1939 protocol the PGN is an identifier);
In the field “ Source Address ” the address of the device that sends the frame is defined;
In the field “ Transmission Type ” the modality of J1939 message transmission is defined:
o
On Data Change: the J1939 message is sent when the data from Modbus are changed;
o
On Timer: the J1939 message is sent cyclically.
In the field “ Send Timer ” the delay (in milliseconds) with which sending the J1939 message is defined;
In the field “ Mnemonic ” a description for the frame is defined.
Figure 6: “Transmit J1939 Frames” window