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B-1

NJ/NX-series Database Connection CPU Units User’s Manual (W527)

B-1 Task Design Procedure ................................................................................ B-2

B-1-1 Startup Time of DB Connection Service .......................................... B-2

B-1-2 Reference Values for Execution Time of DB Connection

Instructions ...................................................................................... B-4

B-1-3 How to Measure Execution Time of DB Connection Instructions .... B-7

B-1-4 Guideline for System Service Execution Time Ratio ....................... B-8

B-1-5 Checking the System Service Execution Time Ratio ...................... B-9

B-2 Execution Time of DB Connection Instructions ........................................... B-11

B-2-1 Restrictions to Execution Time of DB Connection Instructions ..... B-11

B-2-2 Impact of Operation Log Recording on Execution Time of DB

Connection Instructions ................................................................. B-17

B-2-3 How to Measure DB Response Time ............................................ B-18

B-2-4 Ensuring Equipment Performance (Takt Time) by Monitoring

Instruction Execution Timeout ....................................................... B-19

B-3 Specifications ............................................................................................. B-20

B-3-1 General Specifications ................................................................... B-20

B-3-2 Performance Specifications ........................................................... B-20

B-3-3 Function Specifications .................................................................. B-20

B-4 Version Information .................................................................................... B-21

B-4-1 Unit Versions and Corresponding DB Connection Service

Versions ......................................................................................... B-21

B-4-2 DB Connection Functions That Were Added or Changed

for Each Unit Version ..................................................................... B-21

B-4-3 Actual Unit Version of CPU Unit and Unit Version Set in the

Sysmac Studio Project................................................................... B-22

Appendix B

Omron NX701-1620 User Manual

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