Delta RMC151 - Manual (Page 539)

6 Communication
• Data Channel 0
These 2 registers contain the data for reading or writing a single RMC70 register.
• Data Channel 1
These 8 registers contain the data for reading or writing to contiguous RMC70
registers.
Debugging the Command Area Data
The Event Log displays the Command Area data in the following order:
Cmd Register, Cmd Parameter 1, Cmd Parameter 2, Cmd Parameter 3, Cmd Parameter 4,
Cmd Parameter 5
Example:
Assume a Move Absolute command has been issued to the RMC70 via PROFIBUS.
The Event Log may look like this:
Steps 28-31 show how the command parameters are changing. The command word
shows the command that will be issued, (hexadecimal 14 is 20 in decimal), and the
command select bit ( the 1 in the middle of the word).
In step 33, bit 31 of the Command Register changed, which then issued the move
command.
Debugging Data Channel 0
The Event Log displays the Data Channel 0 data in the following order:
Read/Write Register (register 6), Explicit Write Value (register 7)
Example:
Assume a value of 46.2 was written to %MD56.0 via PROFIBUS. The Event Log may
look like this:
Step 38 shows that the File is 56 (38 in hexadecimal), bit 31 is set to 1 for a write.
The Explicit Write register contains the write value 46.2, but it is very difficult to
decipher a float value from its hexadecimal representation.
Step 39 shows that the Read/Writer Request bit changed, which requested the
write.
Debugging Data Channel 1
The Event Log displays the Data Channel 1 data in the following order:
Read/Write Command Register (register 8), Explicit Write Value 0, Explicit Write Value 1,
Explicit Write Value 2, Explicit Write Value 3, Explicit Write Value 4, Explicit Write Value 5,
Explicit Write Value 6
Example:
Assume 3 values were written to 3 registers beginning at %MD56.10. The Event
Log may look like this:
deltamotion.com 519