DL205 User Manual, 4th Edition, Rev. D
4-39
Chapter 4: System Design and Configuration
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Word Data Types
Registers PLC Range (Octal)
Input/Holding
(484 Mode)*
Input/Holding
(585/984 Mode)*
V-Memory (Timers) V0 – V377 3001/4001 30001/40001
V-Memory (Counters) V1000 – V1177 3513/4513 30513/40513
V-Memory (Data Words)
V1200 – V1377 3641/4641 30641/40641
V1400 – V1746 3769/4769 30769/40769
V1747 – V1777 --- 31000/41000
V2000 – V7377 --- 41025
V10000 – V17777 --- 44097
*Modbus: Function 04
The DL-250 supports function 04 read input register (Address 30001). To use function 04,
put the number ‘4’ into the most significant position (4xxx) when defining the number of
bytes to read. Four digits must be entered for the instruction to work properly with this mode.
The maximum constant possible is 4128. This
is due to the 128 maximum number of Bytes
that the RX/WX instruction can allow. The
value of 4 in the most significant position of
the word will cause the RX to use function 04
(30001 range).
Refer to your PLC user manual for the correct memory size of your PLC. Some of the addresses
shown above might not pertain to your particular CPU.
For an automated Modbus/Koyo address conversion utility, search and download the file
modbus_conversion.xls from the www.automationdirect.com website.
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