Omron NT31 Operation Manuals page 88

Connecting to the RS-232C Port at the Host
Reference: Connection to the peripheral port of the CPU is not possible.
C-series C200HS, C200HX/HG/HE (-ZE), CPM1, CQM1 CPUs, SRM1
Connect to the built-in RS-232C port of the CPU, or the RS-232C port (port A, B)
of the communication board. Note that the connection to a CPM1 must be made
via an RS-232C adapter (CPM1-CIF01).
- PC system setting area settings
When connecting to a C200HS, C200HX/HG/HE (-ZE), CPM1, or CQM1
CPU, or SRM1, set the following communication conditions for the PC system
setting area.
Item
Communication mode
Communications speed
Stop bit
Parity
Data length
Unit #
*1 Set the host link communications speed at 9600 bps or 19200 bps with the
memory switch at the NT31/NT31C. For details, refer to "Settings the Host Link
Method" (page176).
Set the PC system setting area settings directly from a peripheral tool (e.g.
SYSMAC support software).
For details on operations relating to the PC system setting area, refer to the
manual for the PC which is used.
The PC system setting area word numbers and settings to be made depending
on the unit and port to which the connection is made are shown below.
When using the built-in RS-232C port of C200HX/HG/HE (-ZE), CQM1, SRM1
Word # Writing Value
DM6645 0001
DM6646 0303
0304
DM6648 0000
Setting at Host
Host link mode
Set the same speed as set at the NT31/NT31C
2 stop bits
Even
ASCII 7 bits
00
Settings
Host link mode, no CTS control
Communication conditions set by the contents of DM
Data length 7 bits, 2 stop bits, even parity,
communications speed: 9600 bps
Data length 7 bits, 2 stop bits, even parity,
communications speed: 19200 bps
Unit # 00
Section 4-1
(*1)
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