Plc Setup - Omron SYSMAC CS Series Operation Manual

PLC Setup

7-1 PLC Setup
7-1-1 Overview of the PLC Setup
Cases when settings must be changed
The input response time settings for Basic I/O Units must be changed in the
following cases:
• Chattering or noise occur in CS-series Basic I/O Units.
• Short pulse inputs are being received for intervals longer than the cycle
time.
Data in all regions of I/O Memory (including the CIO Area, Work Areas,
Timer Flags and PVs, Task Flags, Index Registers, and Data Registers)
must be retained when the PLC's power is turned on.
The status of bits force-set or force-reset from a Programming Device
(including Programming Consoles) must be retained when the PLC's power
is turned on.
• You do not want the operating mode to be determined by the Program-
ming Console's mode switch setting at startup.
• You want the PLC to go into RUN mode or MONITOR mode and start
operating immediately after startup.
• You want the operating mode to be other than PROGRAM mode when
the power is turned ON.
Disabling detection of low-battery errors when it is not required.
Detecting interrupt-task errors is not required.
Data files are required but a Memory Card cannot be used or the files are
written frequently. (Part of the EM Area will be used as file memory.)
The peripheral port will not be used with the Programming Console or CX-
Programmer (peripheral bus) communications speed auto-detection and will
not used the default host link communications settings such as 9,600 bps.
Note Pin 4 of the DIP switch on the front of the CPU Unit must be OFF to
change the PLC Setup settings.
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The PLC Setup contains basic CPU Unit software settings that the user can
change to customize PLC operation. These settings can be changed from a
Programming Console or other Programming Device. The various settings for
the CPU Unit are made in the PLC Setup.
The following table lists cases in which the PLC Setup must be changed. In
other cases, the PLC can be operated with the default settings.
Note To read or set parameters in the PLC Setup, use the version of CX-Program-
mer that corresponds to the parameters.
For example, with CX-Programmer Ver.3.@,when the PLC Setup is uploaded
from a PLC that was used to set the PLC Setup for CPU Unit Ver. 2.0 or
higher only, the PLC Setup that was set cannot be downloaded again. (The
following screen will be displayed.) Use the CX-Programmer Ver. 4.0 in this
case.
Scheduled Interrupt Time Units
Interval
Scheduled interrupt task
Basic I/O Unit Input Response Time
IOM Hold Bit Status at Startup
Forced Status Hold Bit Status at Startup
Startup Mode
Detect Low Battery
Detect Interrupt Task Error
EM File Memory
Peripheral Port Settings
Section 7-1
Setting(s) to be changed