47 lines
1.2 KiB
Plaintext
47 lines
1.2 KiB
Plaintext
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FREEMODBUS 1.2 LPC214X PORT
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===========================
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REQUIREMENTS
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============
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This demo application provides a port for the LPC214X series of processors
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from NXP Semiconductors. The port was done using the MCB2140 from Keil[1]
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which features a LPC2148 MCU.
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It requires a wired serial port to a host processor and a Modbus Master
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Software on the PC side to be useful. Demo versions of Modbus Masters
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can be found in [2] and [3].
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TESTING
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=======
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Start the Modbus Sample Application and test if the input registers starting
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at protocol address 1000 can be read. There are four registers value avai-
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lable and the output should look like:
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Polling slave (Ctrl-C to stop) ...
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[1000]: 6474
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[1001]: 0
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[1002]: 0
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[1003]: 0
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Polling slave (Ctrl-C to stop) ...
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[1000]: -8831
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[1001]: 0
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[1002]: 0
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[1003]: 0
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Polling slave (Ctrl-C to stop) ...
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The simple testing utility used in the 'demo_rtu.bat' script can be found
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at [4].
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[1] Keil MCB2140 kit: http://www.keil.com/mcb2140/
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[2] WinTech ModScan32: http://www.win-tech.com/html/modscan32.htm
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[3] Modus Poll: http://www.modbustools.com/modbus_poll.asp
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[4] FieldTalk Modpoll: http://www.focus-sw.com/fieldtalk/modpoll.html
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