Weatherford 8500 Protocol

Supported Devices

The Weatherford 8500 protocol module can communicate with the Weatherford WellPilot RPOC, ePic VSD, ePic RPC, M8800, M8750, M2000, M8650, M8500, and EXS-1000 ESP. Other devices that use the same Weatherford/Baker/eProd 8500 protocol, or use protocol simulators, are also supported.

Supported Features

The Weatherford 8500 device object provides support for reading and writing parameter data from all device types and uploading card buffer data from devices that support function codes FC16, FC16EX, FC24 and FC25.

Retrieval of downhole cards is supported for devices that support FC24 and FC25.

Card data can be published to a database for later analysis or returned as an array of position/load values to an OPC client.

Function Codes Supported

These function codes (FC) are supported for all controller types.

Code

Description

Code

Description

1

Request parameter information

3

Request load scaling information

8, 40

Request parameter values, Request parameter values above 4095

11

Clear slave errors

12, 44

Write parameter values, Write parameter values above 4095

15

Execute command parameter

17

Force well into idle time

18

Turn well on

255

Request unit Id

These function codes are supported for uploading card buffer data.

Code

Supported Controllers

Description

Code

Supported Controllers

Description

16

ePic VSD, ePic RPC, M2000, M8750, M8800

Request well buffer data. Present, Pump On, and Pump Off buffers only.

16EX

WellPilot RPOC, M8800

Request well buffer data expanded function. Additional Fault and Event buffers.

24

WellPilot RPOC

Event directory retrieval.

25

WellPilot RPOC

Surface and downhole card retrieval.