Omron SYSMAC CS Series Operation Manual page 43

CS-series Features
Change Program
Arrangement Easily
Step Control and Block
Programming
Comments
Section Function
Port-specific Protocol Macro Function
Create Protocol Functions
for All Ports
1,2,3...
Standard Serial
Communications with
External Devices
When separate tasks have been programmed for different production models,
the task control instructions can be used to switch the program quickly from
production of one model to another.
The step control and block programming instructions can be used to control
repetitive processes that are difficult to program with ladder programming
alone.
Several types of comments can be added to the program to make it easier to
understand, including Rung comments, and I/O comments.
The section function can be used to make the program easier to visualize
(CX-Programmer version 2.0 or higher).
The protocol macro function can be used to create versatile communications
functions for any of the PLC's communications ports. The communications
functions can have host link, NT Link, or protocol macro configurations and
can be directed to RS-232C and RS-422/485 ports on any of the Units.
1. One Serial Communications Board can be mounted in the CPU Unit. (A
Serial Communications Board has two serial communications ports.)
2. Up to 16 Serial Communications Units can be connected to a CPU Unit.
(Each Serial Communications Unit has two serial communications ports.)
In total, up to 36 ports can be used.
Messages can be transferred to and from standard serial devices with the pro-
tocol macro function (according to preset parameter settings). The protocol
macro function supports processing options such as retries, timeout monitor-
ing, and error checks.
Symbols that read and write data to the CPU Unit can be included in the com-
munications frames, so data can be exchanged with the CPU Unit very easily.
OMRON components (such as Temperature Controllers, ID System Devices,
Bar Code Readers, and Modems) can be connected to a Serial Communica-
tions Board or Serial Communications Unit with the standard system protocol.
It is also possible to change the settings if necessary.
Note The Serial Communications Board or Serial Communications Unit must be
purchased separately to take advantage of this function.
Programming Device
PT
Serial Communications Unit
CPU Unit
Serial Commu-
nications Board
Up to 36 ports
are possible
Section 1-2
Host Computer
External device
with serial port
5