B&B Electronics 1939STB manual Bytes 9

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Bytes 9 and 10

(Shown in Table 31)

Bits 7, 6, 5, 4 and 3 complete the PDU.

Bits 2, 1, and 0 of byte 9 and bits 7, 6, 5,and 4 of byte 10 are the Source Address for the converter. Each Source Address MUST be unique. SAE J1939-81 describes address management and allocation in detail and should be consulted before connecting to a J1939 bus. Addresses 249 and 250 are designated for offboard diagnostic service tools. WARNING: These addresses are SUGGESTED. The procedure described in SAE J1939-81 should be followed when connecting to any unknown bus.

1939STB4600 Manual

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B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445

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Contents Model 1939STB RS-232 to J1939 Converter CETable of Contents SAE Publications Introduction1939STB4600 Manual Description Physical Description Electrical SpecificationCommunication directed to the device Format Byte 3 Nibble Control ByteByte Message Received from the SAE-J1939 Bus Vendor String SetupInternal Functions Vendor StringRS-232 Baud Change Baud Rate SetupRS-232 Baud Rate Change cont’d Byte 5 UB3 Parity SetupWord Length Stop Bit SetupJ1939 Format External CommandsValid Codes for Byte Message Header SetupTwo Bit Values for Byte 5 Message Information J1939 Message InformationIntpnd ByteTransmit DLC DIR XTD Bit2J1939 Message Frame SAE-J1939 Control Header1939STB4600 Manual Shown in Table Byte1939STB4600 Manual Byte 1939STB4600 Manual Bytes 9 1939STB4600 Manual DIR Message Direction DLC Data Length CodeData Field Reception of Data SAE-J1939 BusID Byte Function Internal Messages Software Installation1939STB4600 Manual Message Transmission sending data to the 1939STB File Logging Saving Message InformationAppendix A. The Extended can / SAE-J1939 Message Frame Arbitration Field Appendix B. Example