Mitsubishi Electric MELSEC iQ-R Series User Manual page 78

(0) The refresh processing of the module label is performed. (The processing is required for when using the module function block.
When the refresh processing is completed, 'bRunRefresh' (M0) is turned on.
(56) When 'bStartOpen' (M1) is turned on, the open processing of connection No.17 is performed.
When the open processing is completed successfully, 'bOpen_OK' (M3) is turned on.
(252) When 'bStartSend' (M5) is turned on, the send data is stored and data is sent to the external device of connection No.17.
When the data send is completed successfully, 'bSend_OK' (M7) is turned on.
(341) When 'bStartClose' (M13) is turned on, the close processing of connection No.17 is performed.
When the close processing is completed successfully, 'bClose_OK' (M15) is turned on.
*1 The refresh processing using the above FB is not required when the Ethernet function of the CPU module (CPU part for the RnENCPU)
is used.
7 COMMUNICATION EXAMPLES
76
7.1 Communication Examples of Ethernet
*1
)