Connecting BACnet to GE

You have two devices in two different buildings on two completely different networks, one that uses the BACnet IP protocol to communicate, while the other one talks GE SRTP protocol and they need to talk to each other. What do you do?

A FieldServer is a protocol converter or gateway that can communicate in many different protocols and physical layers including BACnet IP protocol and the GE SRTP protocol. The Fieldserver acts as a middle man between the two devices. It reads data from one device, stores it internally and makes it available to the 2nd device using another protocol. This is how the FieldServer converts BACnet IP data to GE SRTP data.

It's a simple solution to a common problem that we can help you with.

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Call us: 1-866-383-1657 (Toll Free) or (778) 370-3882

BACnet IP

BACnet IP is part of the ASHRAE’s BACnet family of protocols that operates on the Ethernet IP network. With the help of a Fieldserver we can set and retrieve BACnet IP points and settings from your device, or make data from other BACnet devices points available to your device. The Fieldserver can convert BACnet IP to a wide variety of other building automation protocols and acts as a protocol converter or gateway More information, Driver Data Sheet

GE SRTP

SRTP=Service Request Transfer Protocol


he GE-SRTP driver allows the FieldServer to transfer data to and from devices over Ethernet using GE-SRTP Driver protocol. Almost all GE automation equipment supports the GE-SRTP protocol when equipped with an Ethernet Port.


The FieldServer can emulate either a Server or Client. The driver, acting as a Client, is capable of reading and writing system memory of any number of remote SRTP capable devices. The FieldServer can scale word data ( %AQ, %AI, %R ) when acting as a Client.


When configured to act as an SRTP Server, the driver accepts system messages which write to system memory and responds to read requests. When acting as a Server the driver is always at privilege level 4 (allowing it to be written and read).


The driver cannot emulate a Client and Server simultaneously on the same connection to the same IP address.


Data Types
%R Register memory %AI Analog Input Memory %AQ Analog output memory %I Discrete input memory %Q Discrete output memory %T Discrete temporary memory %M Discrete momentary memory %SA Discrete system memory group A %SB Discrete system memory group B %SC Discrete system memory group C %S Discrete system memory %G Discrete global data table

More information, Driver Data Sheet

Range of Conversion Solutions

Depending on project requirements select from units with varying resources. and multi port devices. OEM and embedded solutions too.
QuickServer 1010 2x RS485 1x Ethernet
QuickServer 1011 1x RS485 1x Ethernet 1x Lonworks
QuickServer 1020 1x RS485 1xRS232 1x Ethernet
QuickServer 1021 1x RS485 1xRS232 1x Ethernet 1x Lonworks
QuickServer Fieldbus 1x RS485 1x Ethernet M-bus or KNX
FS20 Series 1x RS232/485 1x Ethernet 1x Lonworks
FS25 Series 2x RS232/485 1x Ethernet
FS30 Series 2x RS232 and 2x RS485 2x Ethernet 1x Lonworks FieldBus Support:eg Profibus, DeviceNet etcHot Standby Support
FS40 Series 8x RS232 and 2x RS485 2x Ethernet 1x Lonworks FieldBus Support: eg DH+, MB+, Profibus, DeviceNet etcHot Standby Support
SlotServer 1x RS232/485 1x Ethernet 1x Lonworks For Rockwell ControlLogix 5600
Lonworks and Fieldbus are options not provided on base models.  

Connection Diagram

BACnet IP

FieldServer

GE SRTP

Purchase Now

You can purchase some of these items now at ModbusBACnet.com. We keep stock of most gateways and CAS can often ship for next day delivery. Often we need to do due diligence with you, check the number of devices, trunks, points , network routing and many other factors and thus we like a chance to chat to you, learn your project requirements and work with you to provide the most effective solution. Contact us.

Configuration and Support

With CAS you are purchasing a solution - not a commodity. If you ask CAS to do the gateway configuration for you then you are purchasing a solution from us and we will work with you to pre-configure the device, make changes as you require them, keep a backup of your files and provide support for you and your customer when installation is done.

CAS are famous for a high level of effective and responsive support. We work with you using voice, email and remote desktop applications.

Contact us

We have the solution that you are looking for, please contact us today.

Call us: 1-866-383-1657 (Toll Free) or (778) 370-3882
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