6
．
Serial Communications Settings
8
6.
Serial Communications Settings
This section describes the parameters and cable wiring, which are set up in this guide.
Parameters
6.1.
The following parameters are required to connect the Controller and the Digital Temperature
Controller via serial communications.
Setting item
Controller
(Serial Communications Unit)
Digital Temperature
Controller
Device name
J01
-
Unit No.
0
-
Communications Unit No.
(slave address)
-
1 (default)
Serial communications port
(connection)
Port 1 (RS-422A/485)
-
Terminating resistance
Terminating resistance ON
(TERM: ON
）
-
2-wire or 4-wire
2-wire (WIRE: 2)
2-wire (fixed)
Serial communications mode
Serial Gateway
-
Data length
(transmission character)
7 bits (default)
7 bits (default)
Stop bits
2 bits (default)
2 bits (default)
Parity (parity bit)
Even (default)
Even (default)
Baud rate
9,600 bps (default)
9,600 bps (default)
Communications method
-
CompoWay/F (default)
Send data wait time
-
20 ms (default)
Precautions for Correct Use
The connection procedure described in this guide assumes that the following Serial
Communications Unit, port and setting values are used.
Model: CJ1W-SCU42
Serial communications port: Port 1
Unit No.: 0
Device name: J01
If you connect devices under different conditions, refer to
Section 9. Program
and create a
program by changing the variable names and setting values.
