Honeywell HC900 - Manual (Page 74)

66 HC900 Hybrid Controller Communications User Guide Revision 10
12/07
6.10 Scheduler
Summary
The SP Scheduler parameters are listed according to category related to SP Scheduler status plus
interaction and scheduler segment mapping. A section is also provided to aid in configuring a Scheduler
and recipe interface for third party software.
In the fixed map each Scheduler is assigned to two non-contiguous sections of the map:
• Scheduler parameters (Table 6-15)
• Schedule segments (Table 6-16).
In a custom map the above parameters may be contiguous.
Function Code Support
Read – Function Code 3
Write – Function Code 16 (10 hex)
Scheduler Value Register Map
You will need to define the parameters for the Schedule as required by the application. Application notes
for these parameters are provided and further defined in the Scheduler Value Register Map.
Table 6-15 contains Value Register addresses of SP Scheduler #1. See Table 6-1 for starting and ending
addresses (hex) for SP Scheduler #2.
Scheduler Segment Register Map
Table 6-16 indicates the range of addresses applicable to a scheduler segment. Each segment uses 48
registers (30 hex).
Segment Register Map Addresses
Table 6-17 describes the registers that are part of a schedule segment. To determine the actual register
address for a parameter within a segment, add the register offset to the start address of the segment.
Considerations and Methods for Downloading, Operating, and Reading Status of SP Schedules
A SP Scheduler interface can be developed (and recipes containing a schedule can be created) in third
party software using the parameters listed in Table 6-17.
In creating a Scheduler interface showing a number of segments and outputs for each segment on a graphic
display might include a table referencing the maximum number of segments that you will be using for
your process. Refer to the Scheduler Segment Register Map - Table 6-16 for the range of addresses
applied to each scheduler segment. Each segment uses 48 registers (30 hex). Use the Segment Register
Map - Table 6-17 for the parameters to be referenced for read/write within each segment. Application
notes for these segment parameters is provided.