Omron NT30 Operation Manual page 62

Connection to a PC by Host Link via RS-422A
Communications
port 1
Communications
port 2
Connecting to a CPU Unit
52
The following describes the switch settings so as to enable the CPU Bus Unit
setting. For details of the CPU Bus Unit setting, refer to the SYSMAC CVM1/CV-
series Host Link Operation Manual (W205).
(RS-232C)
(RS-232C/
RS-422A)
I/O port
selector
switch
RS-232C
RS-422A
Terminator
ON
OFF
Set the communication conditions with the PC Setup functions when a
CVM1/CV-series Host Link Unit is connected to the NT30/30C. The PC Setup
can be made directly from the Programming Device (CX-Programmer) or the PC
Setup information created with a Programming Device can be transferred to the
CPU Unit.
The following describes the switch settings so as to enable the PC Setup. For
details of the PC Setup, refer to the SYSMAC C20H/C28H/C40H/C60H Pro-
gramming Manual (W176) and the SYSMAC C-series and CVM1 PCs SYSMAC
Support Software Operation Manual: CVM1 PCs (W249).
CVM1/CV-series: CV500-CPU01-EV1
Only the CVM1/CV-series CPU Units or version 1 (suffix of "-EV1") or later can be
connected to the NT30/30C.
S Unit # (SW3 and SW4)
Set these switches to 0.
(when using communications port 2)
S Setting of I/O port selector switch (selector switch)
Set this to RS-422A.
S CTS selection (DIP switch pins 2 and 3)
Set pins 2 or 3 to ON. (Set this always to 0 V fixed.)
To use communication port 1, set pin 2. To use commu-
nication port 2, set pin 3.
S Communications condition setting (DIP switch pin 1)
Set pin 1 to OFF.
Communications are performed on the basis of the
CPU Bus Unit system settings of the PLC.
The defaults for the system setting are as follows.
Baud rate: 9,600 bps
Parity: Even
Xon/Xoff control: Not performed
Communications method: Full duplex
Stop bit: 2
Data length: 7 bits
S Terminator setting (selector switch)
When using an RS-422A cable, set this to ON.
CV1000-CPU01-EV1
CVM1-CPU01-EVj
CVM1-CPU11-EVj
CVM1-CPU21-EVj
Section 2-6