Elettronica Santerno SINUS/ISD 200 S-0.75, User Manual, Page: 58 / 206

15P0082B8
USER MANUAL
SINUS/ISD
6 - 2/82
6.2.1.3 Programming Rules
The following rules apply when programming:
Parameterisation Mode
•
Function block output parameter values cannot be changed (because they are a result of the function
block’s processing)
•
Function block input parameter values that receive their values from a link cannot be changed (as they will
change back to the value they receive from the link when the Inverter is running).
Configuration Mode
•
A link’s destination tag must be set to an input parameter (only
one link per input parameter).
•
A link’s source tag may be set to any parameter. Both input
and output parameters can be used as a source.
•
Disable a link by setting the “destination” and “source” tag to
zero.
•
Setting a link’s source tag to a negative value (i.e. 18 becomes
-18) nominates it as a
feedback link, forcing this link to be
executed first. This is used to reduce execution timing delays
in a feedback loop situation.
6.3 6.3 EXECUTION RULES EXECUTION RULES
The complete block diagram is executed every 20ms, with individual control blocks executing within 2ms. Just
before a function block is executed, all the links that have that block as their destination are executed, thereby
copying new values in to the block’s parameter inputs. The input parameters are then processed to produce a
new set of output parameters. The execution order of the blocks is automatically arranged for minimal delay.
•
The output value transferred by a link on execution is clamped to be between the maximum and minimum
value for its destination input parameter.
•
If a links’ source and destination parameters have different decimal point positions, there is no automatic
adjustment. Use a VALUE FUNCTION function block to modify the input into the correct destination format.
Refer to the table below for the result of linking different parameters types.
Source Value Source Value
(the input) (the input)
Source Source
Format
Format
Destination Destination
Format
Format
Destination Value Destination Value
(the result)
(the result)
100.00 XXX.XX XXXX.X 1000.0
100.00 XXX.XX X.XXXX 1.0000
TRUE Boolean XXX.XX 0.01
FALSE Boolean XXX.XX 0.00
0.01 XXX.XX Boolean TRUE
0.00 XXX.XX Boolean FALSE
LOCAL ONLY (1) Enumerated XXX.XX 0.01
0.02 XXX.XX Enumerated REMOTE ONLY (2)
Note that (2) will not always return
Remote Only
Table 6- Table 6-1 1 Execution Rules Execution Rules
Note:
Check the source and destination formats from the Function Block diagrams and/or Chapter 10:
“Parameter Specification Tables” because the Operator Station displays some parameters with the least
significant digit suppressed.
Saving Your Modifications
If parameter values or links have been modified or a macro has been loaded, the new settings must be saved.
The Inverter will then retain the new settings during power-down. Refer to Chapter 5: “The Operator Station” -
Saving Your Application.
Feedback Link
18
BLOCK
BLOCK
BLOCK
[99]
-18
Figure 6- Figure 6-1 1 Quick Link Information: Quick Link Information:
-18 .. (-) -18 .. (-)
→ →
[99] [99]