User`s manual

372
17.2.3 Functions
(1) This instruction stores data received from an external device to a designated
device.
(2) This instruction can identify the address of the reception area in the buffer
memory and read relevant receive data.
(3) When this instruction is executed, reception is completed and the reception
data read request signal (X3/XA) or the reception abnormal detection signal
(X4/XB) is turned off automatically.
It is not necessary to turn on the reception data read completion signal (Y1/Y8) when receive data is read by this
instruction.
(4) The BUFRCVS instruction is used by an interrupt program and its processing
is completed in one scan.
[Operation when the BUFRCVS instruction is being executed]
17.2.4 Errors
(1) When the dedicated instruction is completed abnormally, the error flag (SM0)
turns on and the error code is stored in SD0.
See the following manuals regarding the error code, and check the errors and take corrective actions.
<Error codes>
4FFFH or less: User's manual (hardware design, maintenance and inspection) for the CPU module used
7000H or higher: User's Manual (Basic)
Scan
Sequence program
BUFRCVS instruction
Interrupt program
Data reception Receive data storage
Instruction execution
END processing