HMI Device Counters

System Sentry provides performance data totals that indicate device performance since one or all projects in the system started. System Sentry also provides indicators that enable you to monitor current device performance.

Accumulated totals since the project started

For

Counter

Collection

Counts the Number of:

A

Transmissions

Polled

Transmissions to one or all devices, indicates how much activity is going into a communication device. A rapid increase may provide a warning for a communication device overflow.

 

 

Unsolicited

Transmissions will not occur.

A

Responses

Polled

Responses from the device.

 

 

Unsolicited

Responses will increase every time a response for unsolicited communication is received even though  transmission will not increase.

 

Retries

Polled

Times a device has been retried.

A

 

Unsolicited

Retries will not occur; unsolicited communication requires two transmission failures before a retry can occur.

A

Failures

All

Failures communicating to one or all devices.

E

Skipped Polls

All

Number of polls skipped when communicating to an Async device.

Note: Transmissions, Responses, Retries Failures and Skipped Polls can also be found in diagnostic data for a device.

Indicators of current performance

For

Counter

Collection

Displays the

N

Transmissions/sec

Polled

Transmissions to one or all devices per second.

 

 

Unsolicited

Transmissions will not occur.

 

Responses/sec

Polled

Responses from the device per second.

N

 

Unsolicited

Responses will increase every time a response for unsolicited communication is received even though  transmission will not increase.

For

Other Counter

Indicates if the Device is Currently:

N

Device Up

1 means the device is up.

N

Device Down

1 means the device is down.

 Note: Device Up and Device Down can also be found in diagnostic data for a device.

Expertise Code

N

Novice

A

Advanced

E

Expert

More information

CIMPLICITY counters.