NT31C-ST143-EV3 Omron, NT31C-ST143-EV3 Datasheet - Page 131

• Manufacturer Part Number: NT31C-ST143-EV3
• Description: 5.7 8-Color Dsp,STN,Ivory,Eng
• Manufacturer: Omron

Specifications of NT31C-ST143-EV3

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Connecting to the Host’s RS-422A/485 Port
114
Reference:
*2
*3
Settings at the Host
Connecting to a CS-series Serial Communications Board
Serial Communications Board equipped with an RS-422A/485 port for CS-
series CPU Units:
CS-series Serial Communications Boards and Units with lot number 991220
(December 20, 1999) or later support the high-speed 1:N NT Link method.
Boards and Units with earlier lot numbers cannot be used.
Setting the Front Switches
Set the switches on the Serial Communications Board as shown below.
CPU Unit Allocation DM Area Settings
Setting is written from the Programming Device (a Programming Console or
CX-Programmer) directly into the allocation DM area (system setting area) of
the CPU Unit. After the setting is written, it becomes effective by turning the
power ON, restarting the Unit, restarting the communications port, or execu-
tion of the STUP command.
In the following table, the relevant word addresses in the allocation DM area
and settings are shown.
Port 2
RS-422A/485
DM32010
Port 1
RS-232C
Allocated DM Area
This CPU Unit is for a Duplex-CPU Unit System. The CS1W-SCB41(-V1)
Serial Communications Board cannot be used. Use the CS1W-SCU31-V1
Serial Communications Unit.
A CS1W-SCU31-V1 or CS1W-SCU41(-V1) Serial Communications Unit is
required.
CS1W-SCB41(-V1) (Port 2 is an RS-422A/485 port.)
2-wire or 4-wire selector (WIRE):
Terminating resistance switch (TERM): ON (terminator ON = terminating
words
Port 2
OFF
SCB41
2
RDY
COMM1
COMM2
ON TERM
4
WIRE
PORT2
(RS422/
PORT1
RS485)
8200
Setting
Set to ON (right side).
Wire Selection Switch (WIRE)
Terminator Switch (TERM)
RS-422A: Set to 4 (right side) for 4-wire type.
RS-485: Set to 2 (left side) for 2-wire type.
N1:N NT Link Mode
4
2
(4-wire = RS-422A), or
(2-wire = RS-485)
resistance enabled)
Setting Contents
Section 5-2