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4.1.21 Connecitng a PLC by Modicon
Modicon PLC
Connection method
Setting the communication conditions
Recommended GT and PLC communication settings are as follows.
Communication settings on the PLC sideGT communication settings
(Set with the GTWIN configuration settings.)
Item Value set
Item Value set
Slave address 1
PLC unit No. 1 Mode RTU mode
Baud rate 19200 bps Baud rate 19200 bps
Data length 8 bits Data length 8
Parity check Even Stop bit 1
Stop bit 1 bit Parity Even
Note) It cannot be used without parity.
Usable devices
Device type No. Remarks
Input relay 100000 to 165535
Bit
device
Coil 000000 to 065535
Input relay 100000 to 165535 Designate the address in multiples of 16.
Coil 000000 to 065535 Designate the address in multiples of 16.
Input register 300000 to 365535
Word
device
Hold register 400000 to 465535
Addresses will be as follows when “Modbus” (RTU mode | modicon PLC) is selected as the PLC type.
Device type No. Remarks
Input relay 100001 to 165536
Bit
device
Coil 000001 to 065536
Input relay 100001 to 165536 Designate the address in multiples of 16.
Coil 000001 to 065536 Designate the address in multiples of 16.
Input register 300001 to 365536
Word
device
Hold register 400001 to 465536
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