Rockwell-automation 1771-QB Linear Pos. Manual de usuario descargar pdf (Pagina 71)

Interpreting ModuletoPLC Data

(READS)

Chapter 6

610

Diagnostic Information (words 4, 5 and 8, 9)

After a reset command or powerup, the module displays diagnostic information

so you can detect parameter block errors. (The module doesn’t accept command

blocks until after it receives a valid parameter block.)

Use the diagnostic words to determine the cause of a block transfer error. The

block ID identifies the last block received by the module. It is updated with

each block transfer. The word pointer identifies the location of the problem and

the error code determines the nature of the problem.

The diagnostic information is displayed in BCD format. See Appendix H for an

explanation of numbering formats.

Figure 6.5

Diagnostic

Format

50054

1514 13 12 1110 09 08 07 06 05 0403 02 01 00

000000

Block ID:

0=Not applicable

1=Parameter

2=Setpoint

3=Command

4=Motion

000000

1514 13 12 1110 09 08 07 06 05 0403 02 01 00

Word pointer  This BCD

number indicates which word

within the block is in error.

Error Code  This BCD number

indicates the error that occurred.

The second of the two diagnostic words gives the error code and points to the

word where the error occurred. Table 6.A shows the error codes.

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 225 226

Sin comentarios

Rockwell-automation 1771-QB Linear Pos. Manual de usuario Pagina 71