Delta AS Series Programming Manual page 1115

AS Ser ies Pro gra mm in g M anu al
When the AS Series PLC reads the data from multiple word devices (only input registers), the function code sent is
4 (16#04).
When the AS Series PLC writes the status to one bit device, the function code sent is 5 (16#05).
When the AS Series PLC writes the data to one word device, the function code sent is 6 (16#06).
When the AS Series PLC writes the status to multiple bit devices, the function code sent is 15 (16#0F).
When the AS Series PLC writes the data to multiple word devices, the function code sent is 16 (16#10).
When the AS Series PLC writes the data to multiple word devices, the function code sent is 23 (16#17).
At present, the AS Series PLC only supports the function codes listed above.
4. The parameters in the instruction are valid only while PLC is running. When PLC is powered back on after being
powered off, it takes the settings from the data exchange table by default. If you need to change some parameters
during data exchange, this instruction modifies those parameters.
5. If the specified socket is already communicating, the new parameters become effective after the current
communication is complete.
6. When any parameter is not within the valid range, the instruction is not executed, SM0 is ON, and the error code in
SR0 is 16#200B.
_6 _6 7. The AS Series PLC does not support the Modbus TCP communication instruction or anything similar to the
instruction ETHRW DVP series PLC. If you use the PLC program for Ethernet Modbus TCP communication
control, enable "Program control" mode in the data exchange table first and use the SM numbers from the following
table.
SM Number
SM1167
SM1168–SM1199
SM1200–SM1231
SM1232–SM1263
When data is received successfully, the success flag is ON. When there is an error receiving data, the error flag is
ON. The success flag and the error flag of any one connection socket are never switched to ON at the same time.
6 - 8 3 6
Attribute
Explanation of Ethernet Data Exchange Parameters
R/W
Flag to enable data exchange
R/W
Flag to enable data exchange connections 1–32
R
Success flag for data exchange connections 1–32
R Error flag for data exchange connections 1–32