Specifications

MBX Bridge Help
Cyberlogic Technologies Inc. - 15 -
Once a master path is acquired, the MBX Bridge caches it to improve performance. If the
path is not used within a certain period of time, the MBX Bridge releases it back to the
system for use with other applications, preventing resource hogging.
MBX Bridge Routing Examples
The following sections present examples of some typical applications for the MBX Bridge.
These are simple configurations intended to demonstrate common uses for the bridge.
Much more elaborate configurations are also possible.
The examples given are:
 Modbus Plus / Modbus Plus
 Modbus Plus / Ethernet
 Modbus to Modbus Plus
 Modbus Plus to Modbus
Modbus Plus / Modbus Plus
In this example, there are two PCI-85 adapter cards configured as MBX device 0 and
device 1. Each adapter card is connected to a separate Modbus Plus network. We will use
slave path 1 to route messages between the two networks.
The following configuration emulates the operation of a BP85.
Source
Device Slave Path Filter
Destination
Device Network Type Routing Timeout
0
1
*.*.*.*.*
1
Modbus Plus
MB3.MB4.MB5.0.0
5000
1
1
*.*.*.*.*
0
Modbus Plus
MB3.MB4.MB5.0.0
5000
When sending a message to the bridge, the first routing byte specifies the bridge node,
and the second specifies the slave path number. Source routing bytes MB3 through MB5
identify the routing array for the destination network.