Plc Switch Settings - Omron NT11 - 01-2004 User Manual

Connection to a PLC by the Host Link (RS-422A Type)
1
5
[Wiring connections]
2-5-5

PLC Switch Settings

Connecting to a C-series Host Link Unit
42
- Signal direction: Signal input and output is relative to the host link unit.
Connector
6
Pin No.
1 Receive data B
3 Signal ground
5 Send data B
6 Receive data A
7 Frame ground
9 Send data A
9
NT11
Abbrevi-
ation
SDA (−)
RS-422A
SDB (+)
terminal
block
RDA (−)
RDB (+)
When the NT11 and PLC are connected to each other, set the conditions at
the PLC host link unit or the CPU as given in the table below.
The following is a general description of switch settings.
Refer to the manual for respective units for the details of the switch settings.
Item
I/O port
Baud rate
Transfer code
Parity
1-to-1/1-to-N
Instruction level
Unit No.
*1: The 1-to-N setting enables BCC (Block Check Character). It is not possi-
ble to connect more than one NT11 in a single host link.
C200H/C200HS/C200HE(-Z)E/C200HG(-Z)E/C200HX(-Z)E
Rack-mounting model: 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:
Signal Name Abbreviation
RDB
SG
SDB
RDA
FG
SDA
PLC (host link unit)
Shielding wire
Pin
number
1
3
5
6
7
9
Connector cover
RS-422A cable
RS-422A
Set the same baud rate as the NT11
ASCII 7 data bits, 2 stop bits
Even
1-to-N (*1)
Level 1, 2, 3
00
Section 2-5
Signal Direction
Input
❍
– –
❍
❍
– –
❍
Abbrevi-
ation
RDB (+)
SG
SDB (+)
RS-422A
interface
RDA (−)
FG
SDA (−)
FG
Switch Setting
Output