MVI56-MNET configuration file
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cbehr
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Sunday 12 December 2004 11:14:04 pm |
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MVI56-MNET configuration file
What is MBAP (port 502) and MNET (port 2000) and which do I use for communication on modbus over TCP/IP
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CH
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Monday 13 December 2004 12:11:02 pm |
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RE:MVI56-MNET configuration file
The majority of Modbus TCP devices use port 502. Some devices, like serial to Ethernet converters, can place serial data from a Modbus RTU device on an Ethernet network (encapsulated serial). This is when you would use Port 2000.
ProSoft Support Team
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Monday 13 December 2004 12:11:26 pm |
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RE:MVI56-MNET configuration file
MBAP (port 502) is what most people refer to as ModbusTCP/IP.
Port 2000 will produce a standard Modbus RTU packet, including CRC, wrapped in a TCP/IP wrapper. With Port 2000 calls, a TCP/IP device can strip off the TCP/IP wrapper, and then pass the resulting Modbus RTU packet to a serial Modbus device.
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