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B&B Electronics GW-7553 - Manual User Manual

Page 59

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GW-7553 PROFIBUS/Modbus TCP Gateway User Manual (Version 1.00, Dec/2008) PAGE: 59

z DA: Device Address-0x01

z FC: Function Code-0x02:read DI

z SA(Hi): Start Address(Hi byte)-0x00

z SA(Lo): Start Address(Lo byte)-0x00

z NO(Hi): No. Of points(Hi byte)-0x00

z NO(Lo): No. Of points (Lo byte)-0x10

z BC: Byte Count-0x02

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