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SMD23E2 and SMD24E2 User’s Manual
ADVANCED MICRO CONTROLS INC.
68
Command Bits Must Transition
This condition also applies when switching from Configuration Mode to Command Mode. If a bit is set in
Configuration Word 0 while in Configuration Mode and you switch to Command Mode with the same bit set,
the command will not occur because the bit must transition between writes to the unit.
The command bits are split between two, 16 bit words, Command Word 0 and Command Word 1. Only one
bit in Command Word 0 can make a 0
1 transition at a time.
Output Data Format
The following table shows the format of the output network data words when writing command data to the
SMD23E2 or SMD24E2.
Figure R6.1 Command Data Format
Commands are only accepted when the command bit makes a 0
1 transition. The
easiest way to do this is to write a value of zero into the Command Word 0 before
writing the next command.
PROFINET
Word
Function
0
Command Word 0
1
Command Word 1
2
Command Parameters
Word meaning depends
on the command set
to the SMD23E2 or
SMD24E2
3
4
5
6
7
8
9
