2.3.12 SAM600 system configuration mismatch
GUID-24917837-9798-49CA-8094-CF90C70C11F8 v1
When configuring a SAM600 system, PCM600 verifies that the configured SAM600 module
system matches the detected physical SAM600 module system. The equivalency check
requires that the SAM600 module type and SAM600 module identifier match at each position
in the SAM600 module system and each SAM600 module is connected to its neighboring
SAM600 modules by the same ports as defined in the configuration.
If the user attempts to write a configuration to the SAM600 system that is not matching the
physical SAM600 module system, then PCM600 issues a warning. The user may still choose to
write the configuration.
SAM600 modules verify their configuration against the SAM600 neighbors detected on the
SAM600 system bus. If a SAM600 module receives a new configuration and the configured
SAM600 neighbors cannot be detected within two minutes after startup, then the
configuration is discarded and the module reverts back to the "
Wait for Configuration
" state.
The purpose of this behavior is to re-open all communication ports that may be closed
according to the configuration and keep the whole SAM600 module chain reachable for
PCM600. The two minute time frame allows all SAM600 modules in the chain to start up and
verify their neighboring devices.
Once a SAM600 module has verified its neighboring devices, the configuration is accepted as
valid. If the SAM600 module later detects a mismatch between configured and detected
SAM600 neighbors, it announces a topology error. See
Section 2.3.10 for details on SAM600
supervision and
Section 2.3.11 for system error announcement.
Section 2 1MRK 511 434-UEN B
SAM600 Process Bus I/O System
26 SAM600 Process Bus I/O System
Operation Manual
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