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Register Map for Process and Operation Type Variables
Segment Register Map
70 HC900 Hybrid Controller Communications User Guide Revision 4
9/03
Register
Offset within
segment (Hex)
Register
Offset within
segment
(Decimal)
Parameter Name Access Notes
001A 0026 Output #8 Ramp or Soak
value
R/W Floating Point Note 1
001C 0028 Soak value for Auxiliary
Output #1
R/W Floating Point Note 1
001E 0030 Soak value for Auxiliary
Output #2
R/W Floating Point Note 1
0020 0032 Soak value for Auxiliary
Output #3
R/W Floating Point Note 1
0022 0034 Soak value for Auxiliary
Output #4
R/W Floating Point Note 1
0024 0036 Soak value for Auxiliary
Output #5
R/W Floating Point Note 1
0026 0038 Soak value for Auxiliary
Output #6
R/W Floating Point Note 1
0028 0040 Soak value for Auxiliary
Output #7
R/W Floating Point Note 1
002A 0042 Soak value for Auxiliary
Output #8
R/W Floating Point Note 1
002C 0044 Recycle R/W Number of times to recycle
Floating Point Note 2
002E 0046 Recycle Segment R/W Floating Point Note 2
Note 1: Writing to this register is not permissible in the run mode.
Note 2: Writing to this register is only permissible in reset or ready mode
Example for Determining a Segment Register
To change the ramp value for Output #6 in segment #5 of setpoint scheduler #1, the register address is
determined as follows.
Step 1: Use Table 6-1 to determine the start address for scheduler #3’s schedule. The value is 3200 Hex.
Step 2: Calculate the offset address for segment 5 in a schedule. This is calculated as:
Segment offset address = (segment number – 1) * 48
= (5-1) * 48
= 192 or C0 Hex
Step 3: Use the table above to determine the register offset for Output #6 ramp value. The value is 16
Hex.
Step 4: Calculate the address by adding the results of steps 1, 2, and 3 to determine the register address.
Register address = Schedule program #3’s schedule start address
+ Segment 5 offset address
+ Output #6 ramp value register offset
= 3200 + C0 + 16
= 32D6