Connecting with 1:N NT Links
Using RS-422A/485
Host type
Port A of C200HX/HG/HE(-Z)
(See note 1.)
Section 3-5
Address Write value Settings
DM 6555 5 @ 00 Uses 1:N NT Link
@ : Largest unit number
Port 2 of CQM1H (See note 2.)
DM 6550 5 @ 00
(0 to 7) of the con-
nected PTs. (See note
3.)
Note
(1) RS-422A/485 port of Communications Board.
(2) RS-422A/485 port of Serial Communications Board.
(3) The PT unit numbers for the C200HE (-Z) are 0 to 3.
Refer to the manuals of the PLC being used for details on using the PLC
Setup Area.
Precautions
for Correct Use
? There is no Communications Board for use with C200HX/HG/HE (-Z)
where port B is an RS-422A/485 port.
? There is no Communications Board for use with CQM1H where Port 1
is an RS-422A/485 port.
? When setting a 1:N NT Link in the CX-Programmer, set the baud rate
to 38,400 bps.
Setting the Front Panel DIP Switch (Using RS-232C)
When using C200HX/HG/HE(-Z), set the DIP switch on the front panel to
enable the PLC Setup Area (Data Memory) settings, as follows:
Sets the RS-232C port communications conditions.
Set DIP switch pin 5 to OFF to enable the PLC Setup settings.
OFF
ON
Setting the Communications Board Switches (Using RS-422A/485)
Using C200HX/HG/HE(-Z)
Switch 1:
4 (Four-wire method = RS-422A)
2 (Two-wire method = RS-485)
Switch 2: ON (terminator ON = terminating resistance used)
Using CQM1H
Two-wire/four-wire switch (WIRE):
4 (Four-wire method = RS-422A)
2 (Two-wire method = RS-485)
Terminating resistance switch (TERM):ON (terminator ON = terminating resis-
tance used)
31
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