Omron NT30C-ST141-E Operation Manual page 66

Connection to a PC by Host Link via RS-422A
I/O port
selector
switch
RS-232C
RS-422A
PC
C200HX/HG/HE(-Z)
CQM1H
CPM1
CPM2A, SRM1
CPM2C
Reference
Setting the Front Switches
S Host Link communications method (selector switch)
- If connecting to an RS-232C connector, set this to RS-232C.
I
- f connecting to an RS-422A connector, set this to RS-422A.
S Host Link default value setting (DIP switch pin 4)
To effect the existing DIP switch settings, set pin 4 to ON.
To effect the existing PC Setup, set pin 4 to OFF.
Note: The existing DIP switch settings differ from the existing
S Terminator setting (DIP switch pin 6)
When using an RS-422A cable, set pin 6 to ON.
(Set this for termination.)
Note: Set the Link Adapter to ON also.
PC Setup Settings
Set the following communications settings in the PC Setup.
Item
Baud rate Set to the same baud rate as the NT30/NT30C (See note 1.)
Stop bit 2 stop bits
Parity Even
Data length ASCII 7 bits
Unit # 00
*1 Set the Host Link baud rate to 9,600 bps or 19,200 bps with the memory
switch for the baud rate. For details, refer to Selecting the Host Link Baud
Rate (page 86).
S C-series C200HX/HG/HE(-Z), CPM1, CPM2A, CPM2C, or CQM1H CPU
Unit, or SRM1
The method for connecting to the CPU Unit depends on the model of PC in the
way shown in the following table.
S Connect to the RS-422A port (port A) on the Communications Board.
S Connect to the RS-422A port (port 2) on the Serial Communications Board.
S Connect via the CPM1-CIF11 RS-422A Adapter using the peripheral port.
S Connect via the CPM1-CIF11 RS-422A Adapter using the peripheral port.
S Connect to the peripheral port using the CPM2C-CN111 or CS1W-CN114 Con-
necting Cable and the CPM1-CIF11 RS-422A Adapter. (The CPM2C-CN111
splits the communications port on the CPU Unit into an RS-232C port and the
peripheral port. The CPM1-CIF01 RS-232C Adapter is also required to connect
to the peripheral port.)
S There are no Communications Boards for C200HX/HG/HE(-Z) PCs for which
port B is the RS-422A port.
S There are no Serial Communications Boards for CQM1H PCs for which port 1
is the RS-422A port.
PC Setup as follows.
- DIP switch settings: 2400 bps, 1 stop bit, even parity,
7-bit data length
- PC Setup: 9,600 bps, 2 stop bits, even parity, 7-bit
data length
Possible Settings
Connection Method
Section 2-6
53