Knowledge Base / Protocols

ModbusTCP/IP

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Setting the Modbus TCP/IP Server parameters in an MVI or ProLinx MNET module

The MNET server parameters are set using the config file. The following section must be present in the modules configuration file. This section is used to define the configuration for the server device. # simulated on MNet port #[mnet servers] float flag : n float start : 7000 fl...

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Do any Prosoft modules support Modbus UDP?

Prosoft does not currently offer any UDP based Modbus solutions, all modbus solutions offered via Ethernet are Modbus TCP/IP only....

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What is Modbus TCP/IP?

See attached article for a complete description of the protocol including TCP/IP itself....

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On the MVI56E product line what is the difference between your Modbus TCP communications modules MNET, MNETR, MNETC, MNETCR?

MNETC: Modbus TCP supporting 30 clients allowing it to remain connected to multiple server (slave) devices, and 10 servers allowing concurrent connections from multiple client (master, ie SCADA or DCS) devices. Use this module for most non-ControlNet applications.MNET: Modbus TCP...

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What does a -36 modbus error code indicate?

A negative thirty six (-36) error code is generated when we have successfully connected to a device and issued the device a Modbus request, but it has not responded to the request within the defined response time out period. This is akin to calling some one on the phone, having s...

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The MVI56-MNET is limited to 100 commands. Is there a way to increase this?

Not without using Event Commands. If this module is going to be used only as a client (master), then you can use the MVI56-MNETC, which has a total of 480 commands, 16 commands for each of 30 Clients....

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How do I setup a Modicon Ethernet I/O scanner to a ProSoft/ProLinx MNET device?

All MNET products the following document will step the user through the setup and configuration of a EtherNet I/O scanner within a modicon quantum processor. This same information can also be used with a momentum, or other Modbus TCP/IP I/O scanner devices....

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