Momentum Modbus Plus 170 PNT Series Guia do Utilizador descarregar pdf (Página 238)

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101

Configuring a Modbus Plus Network in Modsoft with Peer Cop

238

870USE10110 July 2004

Confirming the Peer Cop Summary Information on a Modbus Supervisory

Network with Momentum Components (Using Modsoft)

Overview Once you have defined the link and accessed a node, the Peer Cop summary

information values assume default settings. This section describes those settings

Timeout The default Timeout is 500 ms.

Timeout is the maximum interval that Modbus Plus on a Peer-Copped device will

remain healthy without communication activity. If this interval is exceeded, the

device will clear its network health bit and will no longer try to communicate via

Modbus Plus.

The timeout interval must be in the range 20 ... 2000 ms, and it must be specified as

an increment of 20 ms.

For our example, we will use the default setting.

On Error The default On Error setting is CLEAR.

The On Error setting specifies how the Peer-Copped device will treat the last values

received before a timeout, once Modbus Plus communications have been restored.

One of two settings may be used–CLEAR or HOLD. CLEAR sets all the previously

received values to 0, and HOLD retains the previous values.

For our example, we will use the default setting.

Next Step Specifying references for input and output data (see p. 239).

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