Specifications

Cleco
Electric Tool Control TME-100 Series
50 PL12-1300 12/00 en03d141.fm, 30.01.2001
3.10.8 Arcnet / Statistic
Fig. 3-30: Arcnet / Statistic
The ARCNET statistics allow to check the stability of the field bus system. There are two differ-
ent statistics:
• For all external hardware components (bridges, TMs)
• For the station controller
The following is a description of the parameters required
for stable operation.
TM Bridge
Description
Reconfigurations Change upon each reset of a participant
Own reconfigurations Change upon each reset or severe failure
Excessive NAK Should be stable
New next ID Change upon switsch-off/on of downstream participant
CRC error Should be stable
Lost Token Should be stable
Send repetitions Should be stable
Send termination Should be stable
Receive terminations Should be stable
Command errors Should be stable
Unassignable ACKs Should be stable
ACKs with Bit 14/15-Packets without CPT protocol Should be stable
Input queue overflow Should be stable
Packet not assigned by node Should be stable
Discarded input packets Should be stable
c00304en.bmp