Technologies Computer Driver Instruction Manual
FS-8700-39 EST3 Driver Manual              Page 3 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 
1.  EST3 Description 
The  EST3  External  Communications  Protocol (ECP)  driver  allows the  FieldServer  to transfer  data to 
and  from  EST  devices  over  RS-232  or  RS-485  (with  converter)  serial  ports  using  the  EST3  ECP 
protocol. In the EST application the FieldServer always emulates a Client. 
The FieldServer makes use of the following ECP Services: 
Read Operations: 
•  Report Service 
•  Delta Service 
Write Operations: 
•  Command Service 
All read points are continually updated using the Report Service; response times are enhanced using 
Delta Service broadcasts by the EST3 panel. 
The  information  that follows describes how to  expand  upon  the factory defaults provided in  the 
configuration files included with the FieldServer. 
2.  Driver Scope of Supply 
2.1.  Supplied By FieldServer Technologies for this Driver 
FIELDSERVER 
TECHNOLOGIES PART # 
DESCRIPTION 
FS-8915-10  7’ Patch Cable 
FS-8917-03  RJ45 to DB9M Connector adapter 
FS-8917-10  DB9F to terminal Adapter 
FS-8700-39  EST3 ECP Driver Manual 
2.2.  Provided By the Supplier of 3
rd
 Party Equipment 
2.2.1.  Hardware 
PART #  DESCRIPTION  VERSION 
EST3 Gateway 
2.2.2.  Required 3
rd
 Party Configuration 
The  EST3  panel  has  to  be  set  into  the  “Gateway  Mode”  using  the  EST3  Configuration  tool  (3-
SDU) 
Possible Protocols 
ECP Type II  Supported 
ECP Type II with Text  Not Supported 
ECP Type III  Supported 
ECP Type III with Text 
Not Supported 










