Ethernet Communications Modules, 3rd Edition, Rev. D
5-13
Chapter 5: MODBUS TCP for H0/H2/H4-ECOM100
1
2
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5
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8
9
10
11
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14
A
B
C
D
Word Data Types*
Registers (Word)
(V-Memory)
Qty
(Dec.)
PLC Range
(Octal)
Modbus 40001
Address Range
Modbus 30001
Address Range
Access
Timers
256 V0 – V377 40001 – 40256 30001 – 30256
Read/Write
Counters
256 V1000 – V1377 40513 – 40768 30513 – 30768
Data Words
256 V400 – V777 40257 – 40512 30257 – 30512
3072 V1400 – V7377 40769 – 43840 30769 – 33840
5906 V10000 – V23416 44097 – 49999 34097 – 39999
5361
V23417 – V35777 410000 – 415360 310000 – 315360
System Parameters
128
1024
V7600 – V7777
V36000 – V37777
43969 – 44096
415361 – 416384
33969 – 34096
315361 – 316384
Remote Inputs
128 V40000 – V40177 416385 – 416512 316385 – 316512 Read Only
Remote Outputs
128 V40200 – V40377 416513 – 416640 316513 – 316640 Read/Write
Input Points
64 V40400 – V40477 416641 – 416704 316641 – 316704 Read Only
Output Points
64 V40500 – V40577 416705 – 416768 316705 – 316768
Read/Write
Control Relays
128 V40600 – V40777 416769 – 416896 316769 – 316896
Timer Status Bits
16 V41100 – V41117 416961 – 416976 316961 – 316976
Counter Status Bits
16 V41140 – V41157 416993 – 417008 316993 – 317008
Special Relays
32
V41200 – V41237 417025 – 417056 317025 – 317056
Read Only
* Refer to your PLC user manual for the correct memory mapping size of your PLC. Some of the addresses shown above might not pertain to your particular CPU.
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