MAGUIRE FLEXBUS Lite, Installation Operation & Maintenance

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Communications
The WSB 4088 Touchscreen controller communicates two protocols, Modbus TCP and MLAN TCP.
Modbus TCP – Modbus TCP is the primary communication protocol for PLC communication to the
Maguire Blenders. Modbus TCP must be enabled at the controller and uses the IP Address to
communicate over port 502. For more information on Modbus TCP, see the Maguire Modbus register
mapping document.
MLAN Protocol (Maguire Local Area Network) – MLAN is a protocol consisting of commands that allows
two-way communications to the Maguire Weigh Scale Blenders. All Maguire Weigh Scale Blenders dated
back to 1992 contain the essential MLAN commands for basic control and data collection while newer
Maguire controllers contain additional commands for enhanced control and data collection. The MLAN
Protocol was initially intended to provide information for individuals who are writing software for PLCs
and needed to communicate with the Maguire Weigh Scale Blender. This legacy protocol is the method
used by our G2 Software as well as the OPC (Kepware, Dimension Software and Software Toolbox).
The Protocol is available for free and is explained in detail in our MLAN Protocol Manual. MLAN
communications use the ID number and IP address to communicate over port 9999. Configuration of
the ID number and IP address must be setup in the controller. See the MLAN Protocol Manual for more
information.
MLAN communications over Ethernet (includes G2, OPC and direct MLAN) use
port 9999 to communicate.
Modbus communications, when enabled (see below), use port 502.
Setting the MLAN ID Number
Press
Display will prompt for a password. (default: 22222) Then press:
Press
Display will show the System Configuration categories.
Press Communications Display will show the System Communications
categories.
Press Blender I.D. Number Display will show the Blender I.D. Number screen.
On this screen, enter the new ID number using the
keypad. Valid I.D. numbers are 1 though 254.
Press To save the Changes.