128
Programless Communications
Section 5-1
If using an FX3UC-series PLC, use the GX Developer to make the commu-
nications settings.
Start the GX Developer, double-click
PLC Parameter
under
Parameter
in
the project tree, click the
PLC System Setting (2)
Tab, select the channel
to use, select the option to set communications, and then make the follow-
ing settings.
Note
(1) If any other settings are used, change the setting for the EJ1 to the same
settings.
(2) Refer to the user's manual for the PLC for setting methods.
3.
Make the EJ1 settings.
Make the following settings. When using RS-232C, turn ON pin 8 on SW 2
(to select RS-232C). No other settings are required.
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
Pro-
gramless Communications Upload/Download Data Area (Variable Type:
F0/B0)
on page 132 and to
Programless Communications Upload/Down-
load Start Address (Variable Type: F0/B0)
on page 133.
4.
Check operation.
Turn OFF the power to the EJ1 and PLC and then turn the power back ON.
It does not matter which one is turned ON first. Refer to the
Basic Opera-
tions
on page 124 and check the operation.
Item
Setting
Protocol
Special protocol communications
Data length
8 bits
Parity
Even
Stop bits
1 bit
Communications rate
19,200 bps
H/W type
When using RS-232C: Normal/RS-232C
When using RS-485: RS-485
Checksum
Yes (select the option)
Transmission control procedure
Format 4 (Use CR, LF)
Station
00H
Timeout time
1 (default)
Variable type
Parameter name
Setting/Monitor values
F0/B0
Programless Communications Protocol
(Common)
4: AnA/AnU CPU Com-
mon Commands
Port C Send Wait Time
(Common) 1: 1 ms
Port C Baud Rate
(Common) 4: 19.2 kbps
DM Area
Contents (monitor value)
DM Area
Contents (set value)
D00000
Read Response Bits
D01500
Read Request Bits
D00001
Setting Change Response Bits
D01501
Setting Change Request Bits
D00002
Operation Command Response Bits
D01502
Operation Command Request Bits
D00003
Communications Status
D01503
Operation Command Code
D00004
Monitor Value A
D01504
Set Value A
D00005
Monitor Value B
D01505
Set Value B
···
···
···
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Summary of Contents for EJ1 EtherCAT
Page 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
Page 3: ...iv ...
Page 19: ...xx ...
Page 213: ...188 Detailed Description of Services Section 6 4 ...
Page 227: ...202 Detailed Description of Services Section 7 5 ...
Page 303: ...278 Index ...
Page 305: ......