Omron Programmable Terminals NT31 NT31C - Manual (Page 123)

5-2 Section Connecting to the Host’s RS-422A/485 Port
112
• Connecting to a CVM1/CV-series (-EVj) CPUs
• CV500-CPU01-EV1/CV1000-CPU01-EV1/CV2000-CPU01-EV1
• CVM1-CPU01-EV2/CVM1-CPU11-EV2/CVM1-CPU21-EV2
PC Setup
When connecting to the CVM1/CV series CPU by the NT link (1:1) method, no
particular settings are required at the PC Setup.
Setting the Front Switches
@ Host link communication method selection
(selector switch)
Set this to RS-422A.
@ Terminator setting (DIP SW6)
Set this switch to ON.
(Set terminator ON.)
I/O port selector switch
RS-422A
RS-232C
@ Communication type setting (DIP SW3)
Set this switch to ON.
(for communication by NT link)
Connecting to a C-series C200HX/HG/HE(-Z)E or CQM1H
PC Setup Area Settings
Write the PC Setup area (data memory) settings directly from a Programming
Device (e.g. CX-Programmer) in accordance with the host model.
Host Model Word # Writing Value Setting
Port A of C200HX/HG/HE(-Z)E *1 DM6555 4000 Use NT link (1:1)
Port 2 of CQM1H *2 DM6550 4000
( )
*1 RS-422A port of the communication board
*1 RS-422A port of the Serial Communications Board
For details on operations relating to the PC Setup area, refer to the manual for
the PC you are using.
Setting the DIP Switches on a C200HX/HG/HE(-Z)E Communication Board
Set the switches on a C200HX/HG/HE(-Z)E communication board as follows.
Switch 1: Set to 4 (4-wire type, for RS-422A)
Switch 2 : Set to ON for terminator ON (termination resistance applied)
Setting Switches on a CQM1H Serial Communications Board
Set the switches on a CQM1H Serial Communications Board as follows.
Wire selection (WIRE): Set to 4 (4-wire type, for RS-422A)