Serial port raw/ascii interface – Comtrol Modbus TCP User Guide User Manual
Page 20

20 - Chapter 2. Programming Interface
DeviceMaster UP Modbus/TCP User Guide: 2000447 Rev. I
Serial Port Raw/ASCII Interface
2.2.2. Serial Port Raw/ASCII Interface
Serial Port
Raw/ASCII
Addressing
Serial Port 1 Serial Port 2 Serial Port 3 Serial Port 4 Access Rule
Unit ID
255 (FF hex)
255 (FF hex)
255 (FF hex)
255 (FF hex)
N/A
Receive Data
Address
1000 (Base 0)
1001 (Base 1)
2000 (Base 0)
2001 (Base 1)
3000 (Base 0)
3001 (Base 1)
4000 (Base 0)
4001 (Base 1)
Read Only
Receive Data
Sequence
Number Address
1256 (Base 0
1257 (Base 1)
2256 (Base 0
2257 (Base 1)
3256 (Base 0
3257 (Base 1)
4256 (Base 0
4257 (Base 1)
Read/Write
Transmit Data
Address
1300 (Base 0)
1301 (Base 1)
2300 (Base 0)
2301 (Base 1)
3300 (Base 0)
3301 (Base 1)
4300 (Base 0)
4301 (Base 1)
Read/Write
Transmit Data
Sequence
Number Address
1556 (Base 0)
1557 (Base 1)
2556 (Base 0)
2557 (Base 1)
3556 (Base 0)
3557 (Base 1)
4556 (Base 0)
4557 (Base 1)
Read/Write
Statistics
Address
1600 (Base 0)
1601 (Base 1)
2600 (Base 0)
2601 (Base 1)
3600 (Base 0)
3601 (Base 1)
4600 (Base 0)
4601 (Base 1)
Read/Write