3/30/2007 6:36 PM | |
Joined: 3/26/2007 Last visit: 8/17/2024 Posts: 7 Rating:
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Hi all!!!!!!!!!!!!!!!! Ihavebeen trying to communicate these devices with Modbusprotocol, the Drive isa VLT2800 and PLC 224. The param. in the diriveis ok (parity, velocity..., i attachmentthemanual in pdf) Here an ExampleAll value in hexadecimal EXAMPLE 1: Start Motor, Run Speed 40% Modbus function 0FHEX (Force Multiple Coils). Message sent to Modbus RTU from Modbus master Byte 0 Byte 1 Byte 2 Byte 3 7C 04 99 19 Modbus message string: [01] [0F] [00] [00] [00] [20] [04] [7C] [04] [99] [19] [37] [43] [7C]+[04]: Start Command: 0000010001111100 = 047CHEX(reversed) Modbus message string: [01] [0F] [00] [00] [00] [20] [04] [7C] [04] [99] [19] [37] [43] [99]+[19]: NOTE: Speed Command: 4000HEX = 100% speed 40% of 4000HEX = 1999HEX(reversed)
Attachmentmodbus_rtu_vlt__serie_2800.pdf (387 Downloads) |
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