68
Connecting to the RS-232C Port at the Host
Section 4-1
PLC Series
Units with Built-in Host Link
Function
CPUs Connectable with Host
Link Units or Expansion Commu-
nication Board
Host Link Unit/
Commu
nication Board
Connectable to
CV500-CPU01-EV1 CV500-CPU01-EV1 CV500-LK201 CV500
CV Series
CV1000-CPU01-EV1 CV1000-CPU01-EV1 CV1000
(*1)
CV2000-CPU01-EV1 CV2000-CPU01-EV1 CV2000
CVM1 Series
(*1)
CVM1-CPU01-EV2
CVM1-CPU11–EV2
CVM1-CPU21-EV2
CVM1-CPU01-EV2
CVM1-CPU11-EV2
CVM1-CPU21–EV2
CV500–LK201 CVM1
CompoBus/S
master
control unit
SRM1-C02-V1 SRM1
*1 CPUs of CVM1/CV-series PCs without the suffix “-EVj” cannot be connected.
S 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 necessary, or
settings not shown here may be necessary).
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
*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 “Setting the Host Link
Method” (page 176).
*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.
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