Omron SYSMAC CS Series Operation Manual page 171

Expanded System Configuration
Protocol Macros
CompoWay/F
(Host Function)
Note 1. The PLC can be connected to any PT port that supports 1:N NT Links. It
cannot be connected to the RS-232C ports on the NT30 or NT30C, be-
cause these ports support only 1:1 NT Links.
2. The NT20S, NT600S, NT30, NT30C, NT620S, NT620C, and NT625C can-
not be used if the CPU Unit's cycle time is 800 ms or longer (even if only
one of these PTs is connected).
3. The Programming Console functionality of a PT (Expansion Function) can
be used only when the PT is connected to the RS-232C or peripheral port
on the CPU Unit. It cannot be used when connected to an RS-232C or RS-
422A/485 port on a Serial Communications Board or Serial Communica-
tions Unit.
4. When more than one PT is connected to the same PLC, be sure that each
PT is assigned a unique unit number. Malfunctions will occur if the same
unit number is set on more than one PT.
5. The 1:1 and 1:N NT Link protocols are not compatible with each other, i.e.,
they are separate serial communications protocols.
The CX-Protocol is used to create data transmission procedures (protocols)
for general-purpose external devices according to the communications speci-
fications (half-duplex or full-duplex, asynchronous) of the general-purpose
external devices. The protocols that have been created are then recorded in a
Serial Communications Board, enabling data to be sent to and received from
the external devices by simply executing the PMCR(260) instruction in the
CPU Unit. Protocols for data communications with OMRON devices, such as
Temperature Controller, Intelligent Signal Processors, Bar Code Readers, and
Modems, are supported as standard protocols. (See note.)
Note The standard protocols are provided with the CX-Protocol, Serial Communi-
cations Boards, and Serial Communications Units.
Host computer
Protocol
Messages
Messages
The CS-series CPU Unit can operate as a host to send CompoWay/F com-
mands to OMRON components connected in the system. CompoWay/F com-
mands are executed by using the CompoWay/F send/receive sequences in
the standard protocols of the protocol macro function.
CX-Protocol or PSS Support
Software for protocol macro
function
Applicable port
CPU Unit
Peripheral port RS-232C port
No No
General-purpose external device
Section 2-5
Serial Serial
Commu- Commu-
nications nications
Board Unit
Yes Yes
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