Programming Devices - Omron C200HX-CPU ZE Series Operation Manual

Programming Devices

Control System Design
Input/Output Requirements
Sequence, Timing, and
Relationships
Unit Requirements
1-6 Programming Devices
Programming Console
SYSMAC-CPT Support
Software
8. Test the program in an actual control situation and carry out fine tuning as
required. (Section 7 Program Monitoring and Execution and Section 9
Troubleshooting)
9. Record two copies of the finished program on masters and store them safely
in different locations. (Section 4-7 Inputting, Modifying, and Checking the
Program)
Designing the Control System is the first step in automating any process. A PC
can be programmed and operated only after the overall Control System is fully
understood. Designing the Control System requires, first of all, a thorough un-
derstanding of the system that is to be controlled. The first step in designing a
Control System is thus determining the requirements of the controlled system.
The first thing that must be assessed is the number of input and output points
that the controlled system will require. This is done by identifying each device
that is to send an input signal to the PC or which is to receive an output signal
from the PC. Keep in mind that the number of I/O points available depends on
the configuration of the PC. Refer to 3-3 IR Area for details on I/O capacity and
the allocation of I/O bits to I/O points.
Next, determine the sequence in which control operations are to occur and the
relative timing of the operations. Identify the physical relationships between the
I/O devices as well as the kinds of responses that should occur between them.
For instance, a photoelectric switch might be functionally tied to a motor by way
of a counter within the PC. When the PC receives an input from a start switch, it
could start the motor. The PC could then stop the motor when the counter has
received a specified number of input signals from the photoelectric switch.
Each of the related tasks must be similarly determined, from the beginning of the
control operation to the end.
The actual Units that will be mounted or connected to PC Racks must be deter-
mined according to the requirements of the I/O devices. Actual hardware specifi-
cations, such as voltage and current levels, as well as functional considerations,
such as those that require Special I/O Units or Link Systems will need to be con-
sidered. In many cases, Special I/O Units, Intelligent I/O Units, or Link Systems
can greatly reduce the programming burden. Details on these Units and Link
Systems are available in appropriate Operation Manuals and System Manuals.
Once the entire Control System has been designed, the task of programming,
debugging, and operation as described in the remaining sections of this manual
can begin.
The following Programming Devices can be used in programming, either to in-
put/debug/monitor the PC program or to interface the PC to external devices to
output the program or memory area data. Model numbers for all devices listed
below are provided in Appendix A Standard Models. OMRON product names
have been placed in bold when introduced in the following descriptions.
A Programming Console is the simplest form of programming device for OM-
RON PCs. All Programming Consoles are connected directly to the CPU Unit
without requiring a separate interface.
The SYSMAC-CPT Support Software is the only support software currently
compatible with the C200HX/HG/HE PCs. This software is designed to run on
IBM PC/AT or compatibles and allows you to perform all the operations of the
Programming Console as well as many additional ones. PC programs can be
written on-screen in ladder-diagram form as well as in mnemonic form. As the
program is written, it is displayed on a display, making confirmation and modifi-
Section 1-6
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