58
Basic Operating Procedure Section 1-9
Note When using the CX-Programmer, enter the actual Host Link unit number. Do
not add 1 to the value. The CX-Programmer will automatically add 1 internally.
No-protocol Mode
Use the following procedure when creating ladder programs.
a) Sending to Serial Communications Boards
Execute the TXD(236) instruction to send the program to the external
device from the PLC.
Note For the TXD(236) instruction, include a NO condition of the Send
Ready Flag (bit A35605/A35613) in an AND in the input condition.
Execute the RXD(235) instruction to receive the program at the PLC from
the external device.
Note For the RXD(235) instruction, include a NO condition of the Recep-
tion Completed Flag (bit A35606/A35614) in an AND in the input con-
dition.
b) Sending to Serial Communications Units
Execute the TXDU(256) instruction to send the program to the external
device from the PLC.
Note For the TXDU(256) instruction, include a NO condition of the Com-
munications Port Enabled Flag (bits A20200 to A20207) and a NC
condition of the TXDU(256) Executing Flag (word n+9/n+19, bit 05)
in an AND in the input condition.
Execute the RXDU(255) instruction to receive the program at the PLC
from the external device.
Note For the RXDU(255) instruction, include NO conditions of the Recep-
tion Completed Flag (word n+9/n+19, bit 06) and the Communica-
tions Port Enabled Flags (bits A20200 to A20207) in an AND in the
input condition.
Select the Unit.
The Serial
Communications port
address is automatically
calculated.
Select the port.
Select this option.
Enter the unit number for the
actual Host Link (values are
incremented by 1 automatically).
To Next Page
Loading...
Need help?
General
