Manual

Formatting and Interpreting Data Blocks
Chapter 7
715
Figure 7.7
Position/FollowingError/Diagnositc W ords with Diagnostic Selected
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1716151413121110
1716151413121110
First Diagnostic Word
Second Diagnostic Word
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Word 5 (Axis 1)
Word 9 (Axis 2)
Word 13 (Axis 3)
Word 6 (Axis 1)
Word 10 (Axis 2)
Word 14 (Axis 3)
Word pointer  This BCD
number tells you which word is
in error within the block.
Error code  This BCD
number refers to the error
listed in Table 7.A.
Block pointer  This BCD number is the
address of the block which is in error.
Also, this diagnostic status displays automatically when the 1771-M3
controller detects an error in the parameter block immediately after
power-up or an invalid ID in a command block. The diagnostic status
displays automatically in that case because the error prevents your
selecting it through the command block.
The second diagnostic word is the block pointer. The block pointer is a
BCD number that indicates the starting address of the block in error. The
1771-M3 controller gets these block pointers you enter into the parameter
block or the moveset block.
The high byte (bit 10 thru 17) of the first diagnostic word is the word
pointer. The word pointer is a BCD number (1 thru 64) that indicates
which word is in error within the block.
The low byte (bits 00 thru 10) of the first diagnostic word is the error
code. The error code is a BCD number that references the errors listed in
table 7.A.