HMI IPC Counters

The System Sentry provides CIMPLICITY counters for the Inter-process Communications sub-system.

Accumulated totals since the project started

For

Other Counter

Indicates if the Device is Currently:

A

Messages Sent

Messages sent by one or all processes. A number higher or lower than expectation may indicate a problem

A

Messages Received

Messages received by one or all processes. A number lower than messages sent indicates that one or more processes is not processing the messages as quickly as it is receiving them. The acceptable difference depends on the system and which process is being monitored.

A

Logical Link Writes

Writes performed over the logical links. A logical link is a direct connection between processes, as opposed to sending the data through a router.

A

Logical Link Reads

Reads performed over the logical links.

N

Write Retries

Times a write operation was retried. If a process tries to write to a port and fails, it tries again. Write Retries can indicate that a process is backing up.

Important: Retries will not occur on unsolicited communication; unsolicited communication requires two transmission failures before a retry occurs.

Indicators of current performance

For

Counter

Displays the

E

Ports

Software ports created by one or all projects' processes. A process might create entry ports at startup or continuously while it is running.

A

Messages Sent/sec

Messages being sent by one or all processes per second.

 

Messages Received/sec

 

A

Messages Received/sec

Messages being received by one or all processes per second.

A

Write Retries/sec

Times a write operation is retried per second.

Expertise Code

N

Novice

A

Advanced

E

Expert

More information

CIMPLICITY counters.