Modbus Read, Write and Override Parameters plus Exception Codes
Table 10-1 Control Data Parameters
Parameter
Description
Register
Address
Data
Type
Access
Data Range or
Enumerated Selection
Hex
Decimal
Input #1
007B
123
FP
RD
In Engineering Units or
Percentage
Input #2
007C
124
FP
RD
In Engineering Units or
Percentage
PV, SP, Output
007A
122
FP
RD
In Engineering Units or
Percentage
10.3 Read Software Options Status
Read
Doing a Read of register address 00B9 listed in Table 10-2 will tell you which of the
available options are enabled / installed or disabled / not installed.
Table 10-2 Option Status
Parameter
Description
Register
Address
Data
Type
Access
Data Range or
Enumerated Selection
Hex
Decimal
Option Status
(Read only)
00B9 185 INT RD
The data field in the response message will be a decimal number from 0 to 255. Convert
the decimal number to binary as shown in Figure 1
to determine which options are or
are not active.
0 to 255
Convert decimal to binary
Math
0
=
not installed
1
=
installed
EXAMPLE:
2
Binary
SP Programming – installed
0
0
0
0
0
1
1
0
SP Programming
0 to 255
Convert decimal to binary
Math
0
=
not installed
1
=
installed
EXAMPLE:
Binary
SP Programming – installed
0
0
0
0
0
1
1
0
EXAMPLE:
Binary
SP Programming – installed
0
0
0
0
0
0
1
0
SP Programming
Figure 10-1 Software Option Status Information
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