Operations Significantly Increasing Cycle Time; Potential Problems With Event Processing - Omron SYSMAC CV Series Operation Manual

Cycle Time

6-2-4 Potential Problems with Event Processing

Multiple Writing Events
Multiple Instruction
Execution Events
Note 1. In the earlier version, executing the online edit operation could increase
cycle time by as much as 3 seconds. In the CVM1(V2), PC operation is
stopped for the times shown in the following table but there is no effect on
cycle time (i.e., those times are not added to the cycle time). While PC op-
eration is stopped, output status is retained and inputs are not accepted.
Instruction block inserted or deleted at the beginning of the
62K-word users program.
Instruction block including JME(005) deleted at the beginning
of the 62K-word users program.
2. In the earlier version, executing FILP(182) could increase cycle time by as
much as 3 seconds, but this instruction does not affect cycle time in the
CVM1(V2). Just as in the earlier version, however, PC operation is stopped
for as much as 30 seconds for program replacement processing. While PC
operation is stopped, output status is retained and inputs are not accepted.
Communications with SYSMAC NET, SYSMAC LINK, SYSMAC BUS/2,
Host Link, and peripheral devices also stop during those periods. Therefore,
when using a program in which FILP(182) is executed, set the response
time in the System Setup to 30 seconds or more.
3. These changes apply not only to the CVM1(V2), but also to CV500,
CV1000, and CV2000 products in which the rightmost digit of the lot number
is "5."
It is possible for two or more events (unscheduled requests for data processing)
from Peripheral Devices, the host interface, or CPU Bus Units to occur at the
same time.
When two or more writing events (writing the program, writing parameters, reg-
istering the I/O table, changing the mode) occur simultaneously, they are pro-
cessed in the order in which they were received. The later arriving events will not
be executed until the earlier events have been completed.
The following CVSS/SSS operations are writing events:
Data modification, set, reset, online edit, DM edit, mode change, transfer
block (CVSS/SSS to PC), save block (CVSS/SSS to PC), I/O table transfer,
I/O table register, PC Setup, PC Setup information transfer, data trace
execution, program trace execution, setup for BASIC Units and Personal
Computer Units, software switch settings for BASIC Units and Personal
Computer Units, data link table transfer, routing table transfer, clearing
errors, clearing the error log, setting the clock, setting program memory
protect, clearing program memory protect, Memory Card to PC transfer,
debug transfer, reading cycle time
The following host interface operations are writing events:
Data area block write, data area transfer, parameter area write, parameter
area block write, start program area protect, clear protect area, program
area write, program area clear, start execution, stop execution, write clock
information, clear message, allow access, force allow access, open access,
clearing errors, clearing the error log, variable area to file transfer,
parameter area to file transfer, program area to file transfer, force set/reset,
force set/reset for all bits
Like writing events, when two or more instruction execution events (reading/
writing the program, etc.) occur simultaneously, they are processed in the order
in which they were received. The later arriving events will not be executed until
the earlier events have been completed.
Online edit operation
Section 6-2
Stopped time
Approx. 0.5 s
Approx. 2.0 s
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