Omron CVM1D, Operation Manual

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385
Number of words
to be written
PC Memory
Beginning address
for writing
Words allocated to
Special I/O Unit
S: First source word
D: Destination word
Special I/O Unit Memory
5-34 Network Instructions
The Network Instructions are used for communicating with other control PCs or
other Units linked through the SYSMAC NET Link System, SYSMAC LINK Sys-
tem, or Controller Link System. The first two Network Instructions are used to
control the access right to the PC from both local and remote Programming De-
vices.
5-34-1 DISABLE ACCESS: IOSP(187)
(187)
IOSP
Variations
j
IOSP(187)
Ladder Symbol
When the execution condition is OFF, IOSP(187) is not executed. When the ex-
ecution condition is ON, both read and write access to PC memory is disabled
from Programming Devices connected through the Programming Device Con-
nector or Host Link Connector, CPU Bus Units, and Communications Units (oth-
er than SYSMAC BUS Units). Access to memory is disabled until either
END(001) or IORS(188) is executed or PC operation is stopped.
If PC memory is being accessed when IOSP(187) is executed, access will not be
disabled until the current accessing has been completed.
Description
Network Instructions
Section 5-34