262
Serial Communications Section 6-3
Here, we will describe Host Link and No-protocol communications.
Peripheral
bus
Provides high-speed communica-
tions with Programming Devices
other than Programming Con-
soles.
(Remote programming through
modems is not supported.)
OK OK
Serial PLC
Links (CJ1M
only)
Up to ten words per Unit can be
shared by up to nine CPU Units,
including one Polling Unit and
eight Polled Units.
An RS-422A Converter can be
connected to the RS-232C port on
each CPU Unit to communicate
via RS-422A/485, or two CPU
Units can communicate via an RS-
232C connection.
The Serial PLC Links can also
include PTs as Polled Units via NT
Links (1:N) combined with CJ1M
CPU Units.
Not allowed OK
Protocol Connections Description Ports
Peripheral RS-232C
Programming Devices
(Not Programming Consoles)
RS-422A/485
RS-232C
CJ1M CPU Unit
Polling Unit
CJ1W-CIF11
connected to
RS-232C port
CJ1M CPU Unit
Polled Unit
CJ1M CPU Unit
Polled Unit
For NS-series PT:
NS-AL002
8 Units max.
CJ1M CPU Unit
Polling Unit
CJ1M CPU Unit
Polled Unit
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