Omron EJ1 User Manual page 148

Programless Communications
Channel
CH1
CH2
Common
for both
CH1 and
CH2
Note
Data register
D0 Read Response Bits
D1 Setting Change Response Bits
D2 Operation Command Response Bits
D3 Communications Status
D4 Monitor Value A
2. Make the PLC settings.
Use the GX Developer to make the communications settings.
Start the GX Developer, double-click PLC Parameter under Parameter in
the project tree, click the I/O Assignment Setting Tab, click the Switch
Setting Button on the I/O Assignment Setting Tab Page, and then set the
communications port of the Serial Communications Unit as outlined below.
Switch Bit
number.
Position Setting
SW01 b0 OFF
b1 ON
b2 ON
b3 ON
OFF
b4
b5 ON
b6 ON
b7 ON
b8 to b15 ---
SW02 ---
SW03 Same settings as SW01.
SW04 Same settings as SW02.
SW05 ---
(1) To set a different baud rate from that given above, refer to Baud Rate Set-
ting on page 136 and change 0B.
(2) Refer to MELSEC-QnA/QnAS Series on page 136 if using a Communi-
cations Module for the QnA/QnAS Series.
3. Make the EJ1 settings.
When using RS-232C, turn ON pin 8 on SW 2 (to select RS-232C) and
make the settings shown in the following table. No other settings are re-
quired.
Variable type
F0/B0 Programless Communications Protocol
Port C Send Wait Time
For the default settings, data registers in the PLC are allocated to the EJ1
monitor and set values as shown in the following table. If the allocated words
shown below are already in use, change the words referring to Programless
Communications Upload/Download Data Area (Variable Type: F0/B0) on
page 132 and to Programless Communications Upload/Download Start
Address (Variable Type: F0/B0) on page 133.
Contents (monitor value)
Description
Transmission Operation setting
setting
Data bits
Parity bit
Even/odd parity
Stop bits
Checksum
Write during RUN
Setting modifica-
tions
Communications
rate setting
Communications protocol setting
Station number setting
Parameter name
(Common)
(Common) 1: 1 ms
Data register
D1500 Read Request Bits
D1501 Setting Change Request Bits
D1502 Operation Command Request
Bits
D1503 Operation Command Code
D1504 Set Value A
Section 5-1
Set
value
Independent 0BEEH
8
Yes
Even
1
Yes
Allowed
Allowed
115200 bps (0BH)
MC protocol format 5 0005H
0 0000H
Setting/Monitor values
5: MC protocol (format 5)
Contents (set value)
123