Appendix 4 Calculation For The Total Size Of Character String Information Parameters; Appendix 4.1 Calculating Formula For The Total Size Of Character String Information Parameters - Mitsubishi Electric MELSEC Q Series User Manual

APPENDICES
Appendix 4 Calculation for the Total Size of Character String
Set the total size of the character string information parameters (Nic Name, Node Name,
Tag name, Data Type name, and Define name) as follows.
Data cannot be written into the module if the total exceeds the sizes above.
Appendix 4.1
The total size of character string information parameters for each module (Own Nic) is
calculated as follows.
Total size of character string information parameters = Header + Nic Name + Node Name
+ Tag name + Data Type name, Define name + Footer.
For the size of each character string information parameter, refer to the following.
Name
Header
Nic Name
*1
Node Name
n: Number of Consumer Tags set
m: Number of Message Tags (Originator) set
REMCONi: Number of characters of Node Name of the ith Consumer Tag
REMORGj: Number of characters of Node Name of the jth Message Tag (Originator)
*1
Tag name
*1
Data Type name , Define
*1
name
Footer
APPX
- 6

Appendix 4 Calculation for the Total Size of Character String Information Parameters

Appendix 4.1 Calculating formula for the total size of character string information parameters

Information Parameters
• 32K words or less for one module (Own Nic)
• 128K words or less for one project
Calculating formula for the total size of character string
information parameters
Table APPX.5 Calculating formula
n
REMCONi+1
i=1
n
TAGCONi+1
i=1
TAGCONi: Number of characters of Node Name of the ith Consumer Tag
TAGORGj: Number of characters of Node Name of the jth Message Tag (Originator)
n: Number of Tags using Data Type registered in the "User Define" window
mi: Number of registered Defines in Data Type used in the ith Tag
UDi: Number of characters of Data Type name used in the ith Tag
TOTALDLi: Parameter size of Data Type used in the ith Tag
DEFINEj: Number of characters of jth Define name registered in Data Type used in the ith Tag
* 1 When the same character string information parameter is used in multiple Tag Parameters in one
module (Own Nic), use only one character string information parameter for the calculation.
(Appendix 7.3 Calculation example of character string information parameters)
* 2 Round each number down to the nearest integer.
Calculating formula for size (words)
9 (fixed)
NicName+1
+1
2
m
REMORGj+1
+1 +
2
j=1
m
TAGORGj+1
+1 +
2
j=1
n: Number of Consumer Tags set
m: Number of Message Tags (Originator) set
n
UDi+1
+2+TOTALDLi
2
i=1
mi
DEFINEj+1
TOTALDLi
=
j=1
1 (fixed)
*2
+1 +512
2
+1 +512
2
+512
+3
2