FS8705-10 – ‘MicroSTAR’ Serial Driver

FieldServer Driver


‘MicroSTAR’ Serial Driver



This driver is used to exchange data between a FieldServer and a ‘MicroSTAR’ devices. They are also commonly known as ‘Barrington MicroSTAR’ devices.

Each device has 4x AO, 4x AI, 4x DI, 4x DO and 4x Counters. The devices can be daisy chained on a RS485 network.

The driver can monitor the status of these points and write to the outputs.

This is an active client driver. The FieldServer is the client. The MicroSTAR devices are the passive servers. The Client sends messages and processes responses from the MicroSTAR’s.

The driver is a serial driver using a RS232 / RS485 serial ports to connect between the FieldServer and the MicroSTAR’s. If RS232 ports are used then a converter to RS485 must be used.

The driver is fully compatible with other FieldServer drivers and meets FieldServer’s quality assurance standards. The driver was developed by Chipkin Automation Systems, an Approved FieldServer Integrator.

Both Client and Server functionality have been implemented. This means that you can use the driver as a client to monitor/command the devices or you can use it a server to make another type of device appear as if it were a MicroSTAR device. Ie. The server functionality allows you to make a foreign device emulate a MicroSTAR so it can be installed in a MicroSTAR trunk.

Fieldserver Mode Nodes Comments
Active Client 16 A maximum of 16 devices may be connected per trunk. This is a limitation of the protocol which only allows 16 possible addresses.


Formal Driver Type


Active Client


Compatibility Matrix

FieldServer Model Compatible with this driver
FS-x2010 Yes,
FS-x2011 Yes,
FS-x40 Yes,
FS-X30 Future


Connection Information

Connection type: EIA485
Baud Rates: Driver Supports : 110; 300; 600; 1200; 2400; 4800; 9600; 19200; 28800; 38400; 57600; 115200 Baud

MicroSTAR supports: 4800


Data Bits: Driver Supports : 7,8MicroSTAR supports: 8


Stop Bits: Driver Supports : 1,2MicroSTAR supports: 2


Parity: Driver Supports : Odd, Even, NoneMicroSTAR supports: none


Hardware interface: N/A
Multidrop Capability Yes


Devices tested

Device Tested (FACTORY, SITE)

Connection configurations

FS30 shown as representing FS20, FS30 and FS40

Communications functions

Function Notes
Poll Request with Download Data Writes 4xAO values and 4xDO states. Can also be used to reset one/all of the 4 Counters.
Poll Request Reads all data for all inputs. Analog inputs are 16 bits values.



Please contact Chipkin Automation Systems directly for driver support.

The following responses are supported.


Revision History

Date Resp Format Driver Ver. Doc.Rev. Comment
17Aug06 PMC 0.00 0 Created.
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