Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario descargar pdf (Pagina 192)

Error Reporting

Chapter 7

737

46. Computer link timeout (preset to 500 msec).

47. Not used.

48. Maximum number of NAKs accepted per message (preset to 10).

49. Maximum number of ENQs sent per message (preset to 10).

50. Current NAK count.

51. Current ENQ count.

1785KA Data Highway Diagnostic Counters

Byte

No.

17, 18

19, 20

21, 22

23, 24

25, 26

27, 28

Received ACK with bad CRC.

imeout expired with no ACK received.

Mastership contention.

Error in received ACK.

Sum of Bytes 1, 2, and 4.

Received a W

AK.

Master died; we assumed mastership.

False Poll: no answer to poll of size = 1.

Received an ACK when not master

Received frame too small.

Received frame with SRC = DST

Unused.

Bad CRC in received frame.

Received frame too long.

No buf

fer for received message; WAK sent.

Received a retransmission of a frame.

Received frame aborted (line noise).

Message successfully sent (low byte first).

Message successfully received (low byte first).

Command successfully sent (low byte first).

Reply successfully received (low byte first).

Command successfully received (low byte first).

Reply successfully sent (low byte first).

Reply could not be sent.

1 2 ... 187 188 189 190 191 192 193 194 195 196 197 ... 234 235

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Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario Pagina 192

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