1MRK 511 434-UEN A
Section 2
SAM600 Process Bus I/O System
SAM600 Process Bus I/O System
31
Operation Manual
uplink port. If a message loss is detected, the SAM600 module reports this
condition as Peer Delay Error and records a log accordingly.
Mismatch of neighboring SAM600 module:
Each SAM600 module constantly
monitors the communication with its device neighbors on the SAM600 system bus.
In each of the following situations the SAM600 module reports a topology error:
No neighbor is detected on a SAM600 system bus port that should connect to a
neighboring SAM600 module.
A neighboring SAM600 module is detected, but its SAM600 module identifier
or type is not matching with the system configuration. A neighboring SAM600
module is detected on a port, but according to the system configuration no
SAM600 module should be connected.
A topology error is indicated by steady light on the HMI (see
Section 7.2.3
). In
addition, a log is recorded.
