Omron CP1L Operation Manual page 421

Serial Communications
PLC Setup
Port
Serial port Mode: Communications mode NT Link (1:N): 1:N NT Links Host Link
1 or 2
Baud: Baud rate
NT/PC Link Max:
Highest unit number
PT System Menu
6-3-8 1:1 NT Links
Connections
Name
38,400 (standard)
115,200 (high speed)
0 to 7
Set the PT as follows:
1,2,3... 1. Select NT Link (1:N) from Comm. A Method or Comm. B Method on the
Memory Switch Menu under the System Menu on the PT Unit.
2. Press the SET Touch Switch to set the Comm. Speed to High Speed.
The NT Link communications protocol was developed to enable high-speed
communications between PLC and Programmable Terminals (PTs). There are
two communications modes supported by the NT Link protocol: 1:1 NT Links,
in which one PLC is connected to one PT, and 1:N NT Links, in which one
PLC is connected to more than one PT.
OMRON PT
RS-232C
Settings contents
CP1L
NT Link
Default values Other conditions
Turn OFF pin 4 on the CPU
Unit DIP switch hen using
9,600
serial port 1 and turn OFF pin
(disabled)
5 when using serial port 2.
0 ---
With the NT Link protocol, the PLC auto-
matically responds to commands sent
from the PT, so no communications pro-
gramming is required in the CP1L.
Section 6-3
387