MEN ME4, User Manual

Page: 39 / 48

Hardware/Software Interface
20ME04-00 E2

2020-02-25 Page 39
Figure 6. System positions within a modular DIN-Rail system
Note on 8-Bit/7-Bit Addressing

8-bit addressing is compliant to the Windows nomenclature. The last
bit, which is used as the read/write bit, is added to the address
(0 = write, 1 = read).
If you use MDIS driver software, use 8-bit addresses, with any OS.

7-bit addressing is used, e.g., under Linux. A ’0’ is added at the
beginning of the address so that all consecutive address bits are moved
one bit to the right.
If you use standard I2C commands under Linux, use 7-bit addresses.
1 2 3 4 5 6
CPU
module
including
carrier
ME module
ME module ME module ME module ME module