I/O Subsystem; Schedule Processing - Rockwell Automation Allen-Bradley ArmorBlock 1732E-IB8M8SOER User Manual

I/O Subsystem

The user can specify the Output parameter of an MAOC instruction as either a
memory tag or an Output Module's data tag. A pointer to the tag is passed into
the MAOC instruction. Also passed into the MAOC instruction is an internal
parameter of type IO_MAP. If the Output parameter references controller
memory, the IO_MAP parameter is NULL. If the Output parameter references
an output module, the IO_MAP parameter points to the map structure for the
module. The MAOC instruction can then determine if the Output parameter is
associated with a 1732E-OB8M8SR module by checking the module type stored
in the driver table.
Field
Value
Mask
Field
Schedule ID
Sequence Number
Point ID
Point Value
Timestamp

Schedule Processing

The Value and Mask fields are processed and all unscheduled data bits are
moved to the module output data store. This data is written to the output
terminals after all schedules have been processed.
Each schedule is processed. The schedule is not considered if:
• The Schedule ID is not in the range of 1...16.
• The Point ID is not in the range of 0...7.
• The Sequence Number has not changed.
If the schedule is to be considered, it is marked "active". All "active" schedules
are examined every 200 ms. The schedule timestamp is compared to the
current CIP Sync time. If the current CIP Sync time is greater than or equal to
the scheduled Time Stamp, the Point Value in the schedule is moved to the
module output data store for the specified output bit.
Rockwell Automation Publication 1732E-UM003D-EN-E - November 2021
Chapter 10 Use the Sequence of Events Input and Scheduled Output Modules
Size Description
Data values for un-scheduled output bits.
4 bytes 0 = Off
1 = On
Selects which output bits are to be scheduled.
The eight bits (0...7) can be scheduled.
4 bytes
0 = Not scheduled
1 = Scheduled
Size Description
Valid ID's are 1...16. Any other value indicates that the schedule is
1 byte
not to be considered.
The 1732E-OB8M8SR maintains a copy of the schedule. A change in
1 byte sequence number tells the 1732E-OB8M8SR to process the data in
this schedule.
Indicates the output bit associated with this schedule. Entered as a
1 byte
value 00...07.
Next state of output bit specified in Point ID.
1 byte 0 = Off
1 = On
The lower 32 bits of CIP Sync. Indicates when to change the state of
4 bytes
the specified output bit.
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