Server Diagnostics
Server diagnostics are found under the General tab in the tabbed dialog. Server diagnostics are modeless; therefore, they can remain on the desktop if you minimize RSLinx Classic. Select
DDE > Server Diagnostics
to display the following diagnostic counters:Number of Conversations | The number of DDE Conversations handled by RSLinx Classic. This is normally the same as the number of clients talking to RSLinx Classic; however, this is not always the case. Using a Visual Basic client, each DDE display is another conversation to RSLinx Classic. Therefore, you could have a Visual Basic Client requesting five separate items, and have five conversations, or have Excel requesting thousands of items, and have only one conversation. |
Text Item Count | The number of DDE Items talking to RSLinx Classic via the CF_TEXT DDE Protocol. |
Text Poke Count | The number of DDE Pokes sent to RSLinx Classic from DDE Clients via the CF_TEXT DDE Protocol. |
Text Packets Hot | The number of DDE Advises sent from RSLinx Classic to DDE Clients via the CF_TEXT DDE Protocol. |
Text Packets Cold | The number of DDE Requests sent from RSLinx Classic to DDE Clients via the CF_TEXT DDE Protocol. |
Text Request Timeouts | The number of timeouts on a DDE Client's request of items via the CF_TEXT DDE Protocol. |
Excel Item Count | The number of DDE Items talking to RSLinx Classic via the XlTable DDE Protocol. |
Excel Poke Count | The number of DDE Pokes sent to RSLinx Classic from DDE Clients via the XlTable DDE Protocol. |
Excel Packets Hot | The number of DDE Advises sent from RSLinx Classic to DDE Clients via the XlTable DDE Protocol. |
Excel Packets Cold | The number of DDE Requests sent from RSLinx Classic to DDE Clients via the XlTable DDE Protocol. |
Excel Request Timeouts | The number of timeouts on a DDE Client's request of items via the XlTable DDE Protocol. |
Packed Item Count | The number of DDE Items talking to RSLinx Classic via the AdvanceDDE DDE Protocol. |
Packed Poke Count | The number of DDE Pokes sent to RSLinx Classic from DDE Clients via the AdvanceDDE DDE Protocol. |
Packed Packets Sent | The number of DDE updates sent from RSLinx Classic to DDE Clients via the AdvanceDDE DDE Protocol. |
Packed Request Timeouts | The number of timeouts on a DDE Client's request of items via the AdvanceDDE DDE Protocol. |
Fast Item Count | The number of DDE Items talking to RSLinx Classic via the FastDDE DDE Protocol. |
Fast Poke Count | The number of DDE Pokes sent to RSLinx Classic from DDE Clients via the FastDDE DDE Protocol. |
Fast Packets Sent | The number of DDE updates sent from RSLinx Classic to DDE Clients via the FastDDE DDE Protocol. |
Packed Updates Before Sent | RSLinx Classic polled data faster than the client could receive the data. |
Fast Updates Before Sent | RSLinx Classic polled data faster than the client could receive the data. |
OPC Updates Before Sent | RSLinx Classic polled data faster than the client could receive the data or the group rate is slower than the device poll rate. |
OPC Group Count | The number of OPC groups in use to RSLinx Classic. |
OPC Item Count | The number of OPC items in use to RSLinx Classic. |
OPC Subscription Packets | The number of OPC subscription updates. |
OPC Sync Read | The number of OPC synchronous read requests. |
OPC Sync Write | The number of OPC synchronous write requests. |
OPC Async Read | The number of OPC asynchronous read requests. |
OPC Async Write | The number of OPC asynchronous write requests. |
OPC Async Refresh | The number of OPC refresh requests. |
OPC Async Cancel | The number of OPC cancel requests. |
DDE/OPC Write Count | The number of client requested writes sent to RSLinx Classic. |
Optimized Network Write Packets | The number of packets sent to PLCs after being or not being optimized for writes. |
DDE Client Connections | The number of DDE client connects made to RSLinx Classic. |
DDE Client Disconnections | The number of DDE Client disconnects made to RSLinx Classic. If everything is shut down, and these do not match and they did not clear the counts while running, the client did not properly shutdown. |
OPC Client Connections | The number of OPC client connects made to RSLinx Classic. |
OPC Client Disconnections | The number of OPC client disconnects made to RSLinx Classic. If everything is shut down, and these do not match, and they did not clear the counts while running, the client did not properly shutdown. |
Optimized Packets | The number of optimized packets in RSLinx Classic. You can see each from the Optimized Packets display. |
Handled unsolicited messages | Unsolicited messages that were sent to DDE/OPC clients. |
Unhandled unsolicited messages | Unsolicited messages that were not sent to DDE/OPC clients. |
ControlLogix Optimized Packets | The sum of ControlLogix Optimized Packets RSLinx Classic is using for all ControlLogix Processors. Each packet represents a request and a logical median for Tag data to flow between the ControlLogix and RSLinx Classic. RSLinx Classic tries to put as many tags as possible into each packet. The Optimized Packets diagnostics shows details for each of the packets. |
ControlLogix Connections | The sum of connections RSLinx Classic is using for all ControlLogix processors. The maximum number of connections per PLC has a default of 4. You can adjust this setting in the Configure CIP Options dialog box. Each ControlLogix optimized packet uses a ControlLogix connection. If the number of packets exceeds the number of connections, the connections are recycled and reused for other packets in a round robin fashion. |
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