Communications Settings - Omron G3ZA - MANUAL 2 User Manual

Communications Settings

3-1

Communications Settings

Communications
Specifications
Setting the Communications Unit Number and Baud Rate
Note
18
G3ZA settings and operation are performed using RS-485 communications.
The communications functions use the program created in the host computer.
Descriptions of communications in this manual are therefore written from the
viewpoint of the host computer. For example, references to reading and writ-
ing mean reading data from the G3ZA to the host computer and writing data
from the host computer to the G3ZA.
Transmission path connections
Communications method
Sync method
Baud rate
Transmission code
Data length
Stop bits
Error detection
Flow control
Communications settings are made as shown in the following table.
Setting Setting range
Communications unit 0 to 31
number
Baud rate 9.6, 19.2, 38.4 or
57.6 kbit/s
Data length 7 or 8 bits
Stop bits 1 or 2 bits
Parity None, even, odd
Send standby time 0 to 99 ms
The communications unit number and baud rate are set first.
These settings are made with SW1 and SW2 on the front of the G3ZA.
SW1 SW2
SW1 0 1
Unit number 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
SW2 0
Baud rate (kbit/s) 9.6 19.2 38.4 57.6
(1) Refer to Connecting More Than 16 Controllers on page 64 in the Appen-
dix when connecting more than 16 Controllers.
(2) The default settings are shaded in the above table.
(3) When connecting to the EJ1, set SW2 to 3.
Multipoint
RS-485
Stop-start sync
9.6, 19.2, 38.4 or 57.6 kbit/s
ASCII
7 or 8 bits
1 or 2 bits
Vertical parity: None, even, or odd
None
Default
1
9.6 kbit/s
7 bits
2 bits
Even
1 ms
2 3 4 5 6 7 8
1 2 3
Section 3-1
Setting method
SW1
SW2
Communications
Communications
Communications
Communications
9 A B C D E F