ALTUS Nexto Series User Manual

2. TECHNICAL DESCRIPTION
2.4.1. Application Times
The execution time of Nexto CPUs application depends on the following variables:
Input read time (local and remote)
Tasks execution time
Output write time (local and remote)
It is important to stress that the execution time of the “MainTask” will be directly influenced by the “Configuration” system
task, a task of high priority, executed periodically by the system. The “Configuration” task may interrupt the “MainTask” and,
when using the communication modules, as the Ethernet NX5000 module, for instance, the time addition to the “MainTask”
may be up to 25% of the execution average time.
2.4.2. Time for Instructions Execution
The table below presents the necessary execution time for different instructions in Nexto Series CPUs.
Instruction Language Variables Instruction Times (µs)
1000 Contacts LD BOOL 6
ST
INT 43
REAL 81
LD
INT 43
1000 Divisions
REAL 81
ST
INT 15
REAL 23
LD
INT 15
1000 Multiplications
REAL 23
ST
INT 15
REAL 23
LD
INT 15
1000 Sums
REAL 23
1000 PID ST REAL < 5000
Table 17: Instruction Times
2.4.3. Initialization Times
Nexto Series CPUs have initialization times of 50 s, and the initial screen with the NEXTO logo (Splash) is presented after
20 s from the power switched on.
2.4.4. Interval Time
The interval time of the main task of the CPU can be set from 5 to 750 ms.
2.5. Physical Dimensions
Dimensions in mm.
16

ALTUS Nexto Series Specifications

General

Brand	ALTUS
Model	Nexto Series
Category	Computer Hardware
Language	English