Mitsubishi Electric Melsec Q Series User Manual page 62

3
SPECIFICATIONS
Item
Program Allowable number of
Job
execution settings
No. of access target
CPU settings
No. of tags
No. of components
Device tag
Data type
Statistical processing
Buffering capacity during
DB buffering
communication error
Command type
Request message size
Reception protocol
User authentication
Error log capacity
Event log capacity
3
- 3 3.1 Performance Specifications
Table 3.2 MX MESInterface performance specifications
Maximum 2 programs/job
One program before execution of initial action + one program after
execution of final action
64 settings/project
64 tags/project
256 components
4096 components/project
Signed single-precision integer type (16 bits), signed double-precision
integer type (32 bits), single-precision floating point type (32 bits), bit
type, character string type (1 to 32 characters),
16-bit BCD type, 32-bit BCD type
Average, maximum, minimum, moving average
moving minimum
Maximum capacity: CompactFlash card capacity - 32M bytes
*4
(16 M bytes to 512 M bytes)
One-shot execution of a job, enabling the job, disabling the job
Maximum 128 k bytes
HTTP1.0
No. of accounts: 16
User ID: 1 to 20 characters
Password: 6 to 14 characters
Maximum capacity: 1 M byte
• At least 4800 logs can be recorded.
Maximum capacity: 4 M bytes
• At least 4800 logs can be recorded. (When there is no detailed log)
• At least 2 logs can be recorded. (When there is a detailed log)
*1 The monitoring interval is 1 to 600 (in units of 0.1 seconds) or 1 to 32767 (in units of seconds).
*2 When the database is Microsoft
Section 2.6.4 Precautions for using database
*3 [No. of samples] can be set up to 20.
*4 The following shows the method for roughly calculating the buffering duration from the buffering
capacity.
Buffering duration = (No. of executable bufferings)÷(Execution frequency [times/hour]) [h]
No. of executable bufferings = (Usage capacity)÷(SQL text length + Overhead (4 bytes) [cases]
SQL text length = Total field character length + 6 × No. of fields + Total data length + 20 [bytes]
[Calculation example]
Accessing to 256 fields with 1 job and 1 action and performing every 30 seconds when capacity:
64 M bytes, field name: 16 characters, data length: 32 characters
SQL text length = (16 × 256) + 6 × 256 + (32 × 256) + 20 = 13844 [bytes]
No. of executable bufferings = (64 × 1024 × 1024)÷(13844 + 4)
Buffering duration = 4846÷(60÷30 × 60)
Specifications
*2
/tag
*3
® ®
Access 2000/2003/2007/2010/2013/2016, refer to the following.
40 [h]
(From the previous page)
Reference
section
Section 7.10.3
Section 7.7
Section 7.8.3
*3 *3
, moving maximum ,
Section 7.6.4
CHAPTER 9
Section 7.12.5
4846 [cases]