48
Connecting to the RS-232C Port at the Host Section 4-1
*1
This CPU Unit is for a Duplex-CPU Unit System. The CS1W-SCB21/42(-V1) Serial Communications Board
cannot be used.
*2
Use a CPM2C-CN111 or CS1W-CN114/118 Connecting Cable, CPM1-CIF01 RS-232C Adapter, or CPM1-
CIF11 RS-422A Adapter to connect.
*3
The CQM1H-CPU11 does not have a built-in RS-232C port, so connect to the peripheral port to the PT with
a CS1W-CN118 Connecting Cable.
*4
CPU Units of CVM1/CV-series PLCs without the suffix -EV@ cannot be connected.
Settings at the Host When using the host link method, the settings shown below must be made at
the host (depending on the Unit, some of these settings may not be neces-
sary, or settings not shown here may be necessary).
*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).
*2
The 1-to-N setting enables BCC (Block Check Character). It is not actually
possible to connect more than one NT31/NT31C in a single host link.
The setting methods for each type of Unit are described in the following.
Connecting to a C-series
Host Link Unit
C200H/C200HS/C200HE/HG/HX (-Z)E Rack-mounting Unit: C200H-LK201-
V1
Setting the Front Switches
Set each switch with a flat blade screwdriver so that the values or symbols in
the setting value window agree with the following.
CV
Series
(*4)
CV500-CPU01-EV1 CV500-CPU01-EV1 CV500-LK201 CV500
CV1000-CPU01-EV1 CV1000-CPU01-EV1 CV1000
CV2000-CPU01-EV1 CV2000-CPU01-EV1 CV2000
CVM1
Series
(*4)
CVM1-CPU01-EV2
CVM1-CPU11-EV2
CVM1-CPU21-EV2
CVM1-CPU01-EV2
CVM1-CPU11-EV2
CVM1-CPU21-EV2
CV500-LK201 CVM1
Compo-
Bus/S
Master
Control
Unit
SRM1-C02-V1 --- --- SRM1
PLC
Series
Units with Built-in Host Link
Function
CPU Units Connectable with
Host Link Units or Expansion
Communications Board/Unit
Host Link Unit or
Communications
Board/Unit
Connect-
able to
Item Switch Setting
I/O port RS-232C
Communications speed
Set the same speed as for the NT31/NT31C.
(*1)
Transfer code ASCII, 7 data bits, 2 stop bits
Parity Even
1-to-1/1-to-N
1-to-N
(*2)
Instruction level Level 1, 2, 3
Unit # 00