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Expanded System Configuration Section 2-5
4. A PT implementing Programming Console functionality and a PT imple-
menting normal PT functionality cannot be used at the same time.
5. 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.
6. The 1:1 and 1:N NT Link protocols are not compatible with each other, i.e.,
they are separate serial communications protocols.
Protocol Macros 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 Unit, 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 and Serial Commu-
nications Unit.
+
Messages
General-
ur
ose external device
Messages
Applicable port
Peripheral port
RS-232C port
Serial
Communi-
cations
Unit
CPU Unit
Host computer
CX-Protocol or PSS Support
software for protocol macro
function
Protocol
NoNo Yes
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