C–6
Using the D2–DCM with MODBUS
Data Communications Module, 2nd Edition, 2/03
Find the MODBUS address for User V
location V2100.
1.
Find V memory in the table.
2.
Convert V2100 into decimal (1089).
3.
Use the MODBUS data type from the table.
PLC Address (Dec.) + Data Type
V2100 = 1088 decimal
1088 + Hold. Reg. =
Holding Reg. 1089
Find the MODBUS address for output Y20.
1.
Find Y outputs in the table.
2.
Convert Y20 into decimal (16).
3.
Add the starting address for the range
(2049).
4.
Use the MODBUS data type from the table.
PLC Addr. (Dec) + Start Addr. + Data Type
Y20 = 16 decimal
16 + 2049 + Coil =
Coil 2065
Find the MODBUS address to obtain the
current value from Timer T10.
1.
Find Timer Current Values in the table.
2.
Convert T10 into decimal (8).
3.
Use the MODBUS data type from the table.
PLC Address (Dec.) + Data Type
TA10 = 8 decimal
8 + Input Reg. =
Input Reg. 8
Find the MODBUS address for Control Relay
C54.
1.
Find Control Relays in the table.
2.
Convert C54 into decimal (44).
3.
Add the starting address for the range
(3072).
4.
Use the MODBUS data type from the table.
PLC Addr. (Dec) + Start Addr. +Data Type
C54 = 44 decimal
44 + 3073 + Coil =
Coil 3117
Example 1: V2100
Example 2: Y20
Example 3: T10
Current Value
Example 4: C54
Summary of Contents for D2-DCM
Page 4: ...D2 DCM Data Communications Module Manual Number D2 DCM M...
Page 37: ...1A Cable Diagrams...
Page 47: ...Data Communications Module 2nd Edition 2 03 B RLL Communications Programs...
Page 58: ...Data Communications Module 2nd Edition 2 03 C Using the D2 DCM with MODBUS...
Page 67: ...Data Communications Module 2nd Edition 2 03 D Using the D2 DCM with Modems...
