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FS-8700-39 EST3 Driver Manual Page 20 of 21
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com
Tel: (408) 262 2299 Fax: (408) 262 2269 Toll Free: (888) 509 1970 email: support@fieldserver.com
Appendix D. EST3 ECP Connection Statistics:
The EST3 ECP protocol has two distinct levels:
• A poll-response connection is maintained by the EST panel acting as the master. The bytes
transferred in this process are displayed on the FieldServer as SCADA bytes transmitted and
received.
• The FieldServer acts as a client by inserting requests into its response messages; the EST panel
then inserts the requested data into its subsequent polling messages. The bytes transferred in this
process are displayed on the FieldServer as PLC bytes transmitted and received.
The following statistics are available on the Driver Aspects screen when viewing Connection Details
(select the EST Connection in Connection Overview, and press space repeatedly to page to this
screen):
Statistic Name Description
DLL Rx Char Data Link Layer Bytes Received
DLL Rx Msg Data Link Layer Messages Received
DLL Tx Char Data Link Layer Bytes Transmitted
DLL Tx Msg Data Link Layer Messages Transmitted
DLL Timeouts Data Link Layer Timeouts
DLL IC Timeouts Data Link Layer Inter-Character Timeouts
DLL Streaming Data Link Layer Streaming Errors
DLL Bad Replies Data Link Layer Bad Replies
DLL Link Control Data Link Layer Link Control Events
Gateway Type ECP Gateway Type I/II/III
Data Rx Char Data Bytes Received
Data Rx Msg Data Messages Received
Data Tx Char Data Bytes Transmitted
Data Tx Msg Data Messages Transmitted
Conn Rx Char Total Bytes Received on Connection
Conn Rx Msg Total Messages Received on Connection
Conn Tx Char Total Bytes Transmitted on Connection
Conn Tx Msg Total Messages Transmitted on Connection
Delta Rx Char Delta Message Bytes Received
Delta Rx Msg Delta Messages Received