Momentum Modbus Plus 170 PNT Series Guia do Utilizador Página 221

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Configuring a Modbus Plus Network in Modsoft with Peer Cop
870USE10110 July 2004 221
Defining the Link and Accessing a Node Using on a Modbus Plus Network with
Momentum Components
Overview When you reach the default Peer Cop screen, a popup menu asks you to define a
link and access a node.
What Is a Link? The link is the Modbus Plus network on which the CPU resides.
The only valid link value for a Momentum M1 CPU is 1. An M1 can function only on
one Modbus Plus network–multiple Modbus Plus links are not supported.
What Is a Node? The node is the Modbus Plus address of one of the I/O devices on the network.
A valid node value in our example is any number in the range 2...5. For our example,
we will first access the170 ADI 340 00 16-point input module at Modbus Plus
address 2.
Procedure Follow the steps below to define the link and access a node, using the popup menu.
Note: Address 1, the network address of the CPU itself, is not a valid node to
access since the CPU does not need to access itself over the network.
Step Action
1 With the cursor flashing in the Link value field, make sure that the Link value in
the popup is 1. Push <Enter>.
Result: The Link value is set to 1, and the cursor moves to the Node field.
Utility
GoToNode
AddNode OnError Quit
F1
F6
F7 Lev 8 F8 OFF F9F3 F4 F5
Timeout : ms Total Links: Link Id:
PEER COP
On Error : USED 1 OF WORDS
REFERENCE LEN TYPE INDEXMODE
SPECIFIC INPUT -
SPECIFIC OUTPUT -
GLOBAL INPUT -
GLOBAL INPUT -
GLOBAL INPUT -
GLOBAL INPUT -
GLOBAL INPUT -
GLOBAL INPUT -
GLOBAL INPUT -
GLOBAL INPUT -
F2
Timeout
Access to Node :
TO ALL NODES ON LINK
GLOBAL OUTPUT -
Add Node
Link 1
Node 1
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