Reactive Relays - Federal Elektrik - #9

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Untitled table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:5.00pt "Arial", sans-serif; } .font1 { font:8.00pt "Arial", sans-serif; } .font2 { font:16.00pt "Arial", sans-serif; } .font3 { font:12.00pt "Georgia", serif; } REACTIVE RELAYS Modbus Information for FPA50-FPA100-FPA120-FAA200-FKR240 Devices: The device is generally established on floating point register System. Therefore, each register is 4 bytes. Since Modbus is established on 2 byte word, a float register is described as two modbus registers. Number 3 and 16 modbus reading and multi-writing functions can be applied to the device; since floating point is 2 registers long, 16 multi-writing functions have been utilized. Reading Format Request Number of Number of Device No Function Starting Address Hl Starting Address LO Registers Hl Registers LO CRC Hl CRC LO Response Device No Function Number DATA DATA CRC CRC of Bytes Hl LO Hl LO Sample: Read Phase 12 and Phase 23 voltages Request Device No Function Starting Address Hl Starting Address LO Number of Registers Hl Number of Registers LO CRC Hl CRC LO 1 3 0 3 0 4 180 9 Response U12reg4 U23 reg5 Device No Function Number of Bytes DATA HI2 DATA L02 DATA HI1 DATA LOI DATA HI2 DATA L02 DATA HI1 DATA LOI CRC Hl CRC LO 1 3 8 0 0 0 0 0 0 0 0 149 215 Writing Format: Request Device No Starting Starting Number of Function Address Address Registers Hl LO Hl Number of Registers LO I I DATA DATA Hl LO CRC CRC Hl LO Response Device No Function Starting Address Hl Number of Registers Hl Number of Registers LO CRC Hl CRC LO Sample: Lef s change voltage and current transformer rates Request Device No Function Starting Address Hl Starting Address LO Number of Registers Hl Number of Registers LO DATA HI2 DATA L02 DATA HI1 DATA LOI CRC Hl CRC LO 1 16 0 100 0 2 0 0 0 0 180 9 Response Device No Function Starting Address Hl Starting Address LO Number of Registers Hl Number of Registers LO CRC Hl CRC LO 1 3 0 100 0 2 149 215 17/7 ^FEDERAL