Omron NT31 Setup Manual

98
Connecting to the Host’s RS-422A/485 Port Section 5-2
Settings at the Host
When using the RS-422A type 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).
*1
Set the host link communications speed at 9600 bps or 19200 bps with the
Comm. Speed 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(-Z)E/C200HG(-Z)E/C200HX(-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:
Setting the Rear Switches
Item Setting at Host
I/O port RS-422A
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
LK201
RUN
RCV
XMT
ERROR
SW1
0
0
5
2
• Unit # (SW1, SW2)
Set these switches to 0.
• Instruction level, parity, and transfer code (SW4)
Set this switch to 2.
• Communications speed (SW3)
Set this switch to 5 to select 9600 bps.
Set this switch to 6 to select 19200 bps.
SW3
SW2
SW4
• Terminator setting (selector switch)
Set this switch to ON.
• 1-to-1/1-to-N protocol selection (selector switch)
Set this switch to 1-to-N (OFF).
Terminator
OFF
1-to-1 (ON)
1-to-N (OFF)
ON

Omron NT31 Specifications

General

Brand	Omron
Model	NT31
Category	Touch terminals
Language	English