Omron Programmable Terminals NT631, Operation Manuals

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75
Connecting to the RS-232C Port at the Host
Section 4-1
S
Connecting to a CPU
C-series CVM1/CV-series (-EV
j
)
⋅
CV500-CPU01-EV1/CV1000-CPU01–EV1/CV2000-CPU01-EV1
⋅
CVM1-CPU01-EV2/CVM1-CPU11-EV2/CVM1-CPU21-EV2
- PC system settings
When connecting to a CVM1/CV series CPU, set the following communication
conditions for the “PC system settings”.
Item Setting at Host
Communications speed Set the same speed as set at the NT631/NT631C
(*1)
Stop bit 2 stop bits
Parity Even
Data length ASCII 7 bits
Unit # 00
*1 Set the host link communications speed at 9600 bps or 19200 bps with the
memory switch at the NT631/NT631C. For details, refer to “Setting the Host Link
Method” (page 174).
Either set PC system settings directly from a peripheral tool (e.g. SYSMAC
support software), or transmit the PC system settings made at a peripheral
tool to the CPU.
For details on the PC system settings, refer to the SYSMAC
CVM1/CV500/1000/2000 User’s Manual (Ladder) (W202-E1-
j
).
[Setting the front switches]
RS-232C
I/O port selector switch
RS-422A
@
I/O port selection (selector switch)
Set this to “RS - 232C”.
@
System setting (DIP SW4)
To effect the existing DIP switch settings,
set SW4 to “ON”.
To effect the existing PC system
settings, set SW4 to “OFF”.
Note
For CPUs manufactured before or during
June 1995 (lot No.
jj
65), the existing
DIP switch settings differ from the
existing PC system settings as follows.
- DIP switch settings:
2,400 bps, 1 stop bit, even parity, 7 bit
data length
- PC system settings:
9600 bps, 2 stop bits, even parity, 7 bit
data length
For CPUs manufactured from July 1995
onward (lot No.
jj
75), the stipulated
values in the DIP switch settings also
are 9600 bps and 2 stop bits.