Connecting Modbus to GE

You have two devices in two different buildings on two completely different networks, one that uses the Modbus Plus (MB) protocol to communicate, while the other one talks GE TLC 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 Modbus Plus (MB) protocol and the GE TLC 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 Modbus Plus (MB) data to GE TLC 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

Modbus Plus (MB)

This solution is provided to protect your investment in legacy / obsolete equipment. The solution uses a MB+ card installed in a FieldServer. This makes the solution more expensive than most FieldServer solutions.


Modbus Plus protocol is a time-proven, robust communications platform with a huge installed base and industry acceptance. It is a high-speed (one megabaud) network that supports both peer-to-peer and master/slave type communications. Modbus Plus is used by Modicon PLCs, operator interfaces, PCs and other data sources to communicate throughout an automated facility over a twisted-pair cable. Modbus Plus provides all of the benefits of an effective communications network including reduced wiring and maintenance costs, improved productivity through diagnostics, accuracy and information flexibility.


More information, Driver Data Sheet

GE TLC

The TLC driver is used to monitor and control TLC LevelIII (Level 3) lighting panels manufactured by GE's Total Lighting Division. We have solutions for the Prosys lighting panels too. Read more.


The TLC driver allows connection via a RLINK to allow monitoring/control of all connected panels. You can also connect directly to one panel without using an RLINK. In this case only the single panel may be monitored or controlled. However, we have a product at a price point which can make this an effective strategy for small systems or systems that are distributed in multiple buildings or where you cannot easily connect all the panels using one trunk.


The driver can also emulate PSS switches so that group commands can be sent to multiple panels.


We also support a tunnel to allow one Rlink to be shared between the FieldServer and a computer running the GE configuration software.


This driver was developed in co-operation with GE and has been tested at the GE Facility in Vancouver.

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

Modbus Plus (MB)

FieldServer

GE TLC

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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