Modbus registers for physical i/o hardware – Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 User Manual
Page 269

Publication 1758-UM002D-EN-P - October 2010
Extension Modbus Protocol for DataSite Controllers (1758-FLO) 269
Modbus Registers for Physical I/O Hardware
All of the I/O hardware that is used by the DataSite controller must be
assigned to I/O database registers in order for the I/O points to be accessed.
They are mapped as below.
Modbus addresses for I/O hardware
Name
Data Type
Modbus Address
Attribute
DI0
BOOL
10001
RO
DI1
BOOL
10002
RO
DI2
BOOL
10003
RO
DI3
BOOL
10004
RO
DI4
BOOL
10005
RO
DI5
BOOL
10006
RO
DI6
BOOL
10007
RO
DI7
BOOL
10008
RO
DI8
BOOL
10009
RO
DI9
BOOL
10010
RO
DI10
BOOL
10011
RO
DO0
BOOL
1
RW
DO1
BOOL
2
RW
DO2
BOOL
3
RW
DO3
BOOL
4
RW
AI0
U_SHORT
30001
RO
AI1
U_SHORT
30002
RO
AI2
U_SHORT
30003
RO
AI3
U_SHORT
30004
RO
AI4
U_SHORT
30005
RO
AI5
U_SHORT
30006
RO
AI6
U_SHORT
30007
RO
AI7
U_SHORT
30008
RO
AO0
U_SHORT
40001
RW
AO1
U_SHORT
40002
RW
PI0
U_INT
30011…30012
RO
PI1
U_INT
30013…30014
RO
PI2
U_INT
30015…30016
RO