GE MN-ValVue-v2-8-IOM Manuel de service télécharger pdf (Page 46)

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ValVue Digital Communications Software Ver. 2.80

GE Oil & Gas

The MTL 4840 HART maintenance system is a widely used multiplexor for communicating with

HART instruments. Connected to a computer serial port with a RS232⁄RS485 converter, the

multiplexor is capable of supporting up to 31 nodes, each with the capability of supporting up

to 16 sub nodes. Each sub node can control 16 loops. Therefore, the multiplexor provides the

potential to communicate with a maximum of 7936 HART loops, i.e., 31 (nodes) x 16 (sub

nodes) x 16 (loops) using one computer interface. Additionally, the multiplexor supports the

multidrop connection of HART devices on a single loop. Therefore, using the multidrop feature

it is possible to expended capacity of a system beyond 7936 HART devices.

For more information regarding the MTL multiplexor, refer to the MTL documentation.

Using the multiplexor capability of ValVue and the MTL multiplexor, monitoring and

communicating with many SVI’s and other HART devices is possible.

Mux Setup

To setup the nodes used on the MTL multiplexor:

1. After you have checked Use Multiplexor and selected the baud rate and node in the Set

Options (see “Use Multiplexor” on page 45), select Connected Devices.

2. Right-click on the Connected Devices page background and Select Mux Setup on the

context menu.

Figure 29 Context Menu with Mux Functions

Figure 30 appears and prompts for the nodes to be configured.

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 659 660

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GE MN-ValVue-v2-8-IOM Manuel de service Page 46

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