Instruction Manual

Instruction Manual
D103434X012
Blocks
November 2014
152
Table B‐47. Resource Block Parameter Definitions (Continued)
Description
Initial
Value
RangeMode
RO /
RW
Index
Number
Label
PARAMETER_NAME
Cycle Type
CYCLE_TYPE
19 RO
0: Cycle Scheduled
1: Cycle Block
Completion
0, 1
Data Type: Bit String
0: Inactive
1: Active
Identifies the block execution methods available
for this resource, may be scheduled, completion
of block execution
Cycle Selection
CYCLE_SEL
20
0: Cycle Scheduled
1: Cycle Block
Completion
None
Data Type: Bit String
0 = Inactive
1 = Active
Identifies the block execution method selected
for this resource.
Minimum Cycle Time
MIN_CYCLE_T
21 RO 1760 1760
Data Type: Unsigned32
Time duration of the shortest cycle interval (in
1/32 millisecond) of which the resource is
capable.
Memory Size
MEMORY_SIZE
22 RO NA 16
Date Type: Unsigned16
Memory, in kilobytes, available for additional
function blocks.
Nonvolatile Cycle Time
NV_CYCLE_T
23 RO >0
960000
(30secs)
Date Type: Unsigned32
This parameter identifies the minimum time
interval (in 1/32 milliseconds) between copies of
NV class data to NV memory. NV memory is
updated only if there has been a change in the
dynamic value. The last value saved in NV
memory will be available for the restart
procedure or a power cycle. A non‐zero value
regulates the frequency of writes, thus
protecting the life span of the device. If the value
is zero, data will never be automatically copied.
Changes made by other than publishing to NV
parameters will be copied to non‐volatile
memory immediately.
Free Space
FREE_SPACE
24 RO 0 to 100% 13.6719
Data Type: Float
Percent of memory available for additional
function blocks (see also MEMORY_SIZE).
Free Time
FREE_TIME
25 RO 0 to 100% 0
Data Type: Float
Percent of block processing time that is free to
process additional blocks.
RCAS Timeout
SHED_RCAS
26 RW >0 640000
Date Type: Unsigned32
Time duration (in 1/32 millisecond) at which to
give up on computer writes to function block
RCAS parameters. If this time is exceeded then
the function block will change to a mode other
than RCAS based on the SHED_OPT parameter
setting. Shed from RCAS mode never happens
when SHED_RCAS is set to zero.
ROUT Timeout
SHED_ROUT
27 RW >0 640000
Data Type: Unsigned32
Time duration (in 1/32 millisecond) at which to
give up on computer writes to function block
ROUT parameters. If this time is exceeded then
the function block will change to a mode other
than ROUT based on the SHED_OPT parameter
setting. Shed from ROUT mode never happens
when SHED_ROUT is set to zero.
Fail Safe
FAIL_SAFE
28 RO
1: Clear
2: Active
1: Clear
Data Type: Unsigned8
Condition set by loss of communication to an
output block, failure promoted to an output
block or a physical contact. When fault state
condition is set, then output function blocks will
perform FSTATE actions.
-Continued-