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Connecting to the RS-232C Port at the Host Section 4-1
PLC Setup Area Settings
When connecting to a C200HS, C200HX/HG/HE(-Z)E, CPM1, CPM2A,
CPM2C, CQM1, or CQM1H CPU Unit, or SRM1, set the following communi-
cations conditions for the PLC Setup area.
*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 6-7-2 Setting the
Host Link Method (page 155).
Set the PLC Setup area settings directly from a Programming Device (e.g.
CX-Programmer).
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
C200HS, C200HX/HG/HE(-Z)E, CPM2A, CPM2C, CQM1, CQM1H (other
than the CPU11), or SRM1: Built-in RS-232C port connection
C200HX/HG/HE(-Z)E: Serial Communications Board port A
CQM1H: Serial Communications Board port 1
Item Setting at Host
Communications mode Host link mode
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
Word # Writing Value Settings
DM6650 0001 Host link mode, no CTS control
Communications conditions set by the contents of DM
DM6651 0303 Data length 7 bits, 2 stop bits, even parity, communica-
tions speed: 9600 bps
0304 Data length 7 bits, 2 stop bits, even parity, communica-
tions speed: 19200 bps
DM6653 0000 Unit # 00
Word # Writing Value Settings
DM6645 0001 Host link mode, no CTS control
Communications conditions set by the contents of DM
DM6646 0303 Data length 7 bits, 2 stop bits, even parity, communica-
tions speed: 9600 bps
0304 Data length 7 bits, 2 stop bits, even parity, communica-
tions speed: 19200 bps
DM6648 0000 Unit # 00
Word # Writing Value Settings
DM6555 0001 Host link mode, no CTS control
Communications conditions set by the contents of DM