ECM F/A1000, Instruction Manual, Page: 15 / 26

11
SMB Interface (Serial Measurement Bus, F/A1500 Only):
• AFR, F/A, Lambda, %O2, and Module Status Output
• Each Module can be assigned an address from 0h to Fh using a switch on the side
of the module
• Auto-detect feature for Device Identification
• 38400 baud, 1 Start Bit, 8 Data Bits, No parity
• For Communication Protocol, See SMB Interface Section
• SMB Ground and Power are Isolated (±200V max)
SMB/PC Cable Terminal Assignments (F/A1500 Only):
(Cable from PC to SMB/PC Port on F/A1500 Module, 6ft., P/N 1500A-16)
DB9 Female (to PC)
Terminal Number
DB9 Male (to Module)
Terminal Number
2 (Rx) 1
3 (Tx) 2
5 (Gnd) 6
SMB/PC Cable Terminal Assignments (F/A1500 Only):
(Cable from SMB/PWR to SMB/PWR ports on F/A1500 Modules, 1ft., P/N 1500A-17)
DB9 Male (to Module)
Terminal Number
DB9 Male (to Module)
Terminal Number
1 2
2 1
6 6
3 3
7 7
8 8
4 4
5 5
9 9
General Information
Power: 11 to 28 VDC at 5A (surge), 1.4A (continuous)
Fuse: Internal, automatically resetable
Dimensions: 4" x 3.5" x 1",
102mm x 89mm x 25mm (W x H x D)
Weight: 5.6 oz., 160 gm.