Omron NT31 Setup Manual page 72

Connecting to the RS-232C Port at the Host
PLC model
CPM2A, SRM1 • Connect to the CPU Unit's built-in RS-232C port.
• Connect to the peripheral port through a CPM1-CIF01 RS-
232C Adapter.
CPM2C Connect to the CPU Unit's RS-232C port or the peripheral
port through a Connecting Cable (CPM2C-CN111, CS1W-
CN118, or CS1W-CN114).
(The CPM2C-CN111 splits the Unit's Communications Port
into a RS-232C port and a peripheral port. A CPM1-CIF01
RS-232C Adapter is also required to connect to this periph-
eral port.)
PLC Setup Area Settings
When connecting to a C200HS, C200HX/HG/HE(-Z)E, CPM1, CPM2A,
CPM2C, CQM1, or CQM1H, or SRM1, set the following communications con-
ditions for the PLC Setup area.
Item
Communications 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 6-7-2 Setting the
Host Link Method (page 161).
Set the PLC Setup area settings directly from a Programming Device (e.g. the
CX-Programmer support software).
For details on operations relating to the PLC Setup area, refer to the manual
for the PLC which is used.
The PLC Setup area word numbers and settings to be made depending on
the Unit and port to which the connection is made are shown below.
CPM2A, CPM2C, CQM1H, or SRM1: Peripheral port connection
Word # Writing Value
DM6650 0001
DM6651 0303
0304
DM6653 0000
C200HS, C200HX/HG/HE(-Z)E, CPM2A, CPM2C, CQM1, CQM1H (other
than the CPU11), or SRM1: Built-in RS-232C port connection
Word # Writing Value
DM6645 0001
Connection method
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
Communications conditions set by the contents of DM
Data length 7 bits, 2 stop bits, even parity, communica-
tions speed: 9600 bps
Data length 7 bits, 2 stop bits, even parity, communica-
tions speed: 19200 bps
Unit # 00
Settings
Host link mode, no CTS control
Communications conditions set by the contents of DM
Section 4-1
(*1)
55