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UI Protocol ↑
ScaleNet
DF1
Modbus RTU
Modbus ASCII
Modbus TCP
Monitor
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UI Protocol
This is a special protocol developed by Merrick for communications between a
User Interface and the GCM board. If you have a Merrick User Interface
connected to a serial port, then that port must be set to “UI Protocol”. This is a
binary protocol.
Note: If you change this setting via the User Interface, then you may lose
communication and not be able to change it back. Make sure you know which
port (if any) is connected to the User Interface and don’t inadvertently change
its settings.
ScaleNet
This is a protocol developed by Merrick for the exchange of information
between a computer and the Genetix controller. It is a “Master/Slave” protocol
wherein the master requests information or an action and the slave responds.
Typically the master is a computer (PC), and the slave is the Genetix controller.
It is also possible to use this protocol in a “multi-drop” configuration (i.e. RS-
422/RS-485) that allows one master to talk to several slaves (i.e multiple
Genetix controllers). Through ScaleNet, you may have access to all parameter
data in the Genetix controllers. ScaleNet is an ASCII protocol.
The ScaleNet protocol, although proprietary to Merrick, is published and can be
used to develop your own communications interface through programming. The
details of this protocol and programming examples are beyond the scope of this
manual, but if you require assistance contact the Merrick Customer Support
department.
Note: WinMerik® is a program developed by Merrick that runs on a PC and
uses the ScaleNet protocol to get parameter data for either logging or archival
purposes. If you intend to use WinMerik you must set the appropriate port’s
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