Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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20 SERIAL COMMUNICATION INSTRUCTIONS
20.5 Sending Data Using the Bidirectional Protocol
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20
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Applicable devices
*1 Index modification is not available.
*2 FX and FY cannot be used.
*3 RD cannot be used.
*4 FD cannot be used.
*5 T, ST, C, and FD cannot be used.
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Control data
*1 The amount of the data to be sent must be set in units as specified in the engineering tool. For byte specification, set the number of
bytes. For word specification, set the number of words.
Processing details
• By using the bidirectional protocol of the module specified by (U), the data stored in the device specified by (s2) and later is
sent according to the control data in the device specified by (s1) and later.
• The completion status of the G(P).BIDOUT instruction can be checked with the completion device (d) and the completion
status indication device (d)+1.
• The following figure shows how the G(P).BIDOUT instruction operates when completing its execution.
Operand Bit Word Double word Indirect
specification
Constant Others
(U)
X, Y, M, L,
SM, F, B, SB,
FX, FY J  \  T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD U  \G  , J  \  ,
U3E  \(H)G 
Z LT, LST,
LC LZ K, H E $
(U)
*1
  
*3
        
(s1)
  
*4
        
(s2)   
*4
        
(d) 
*2
 
*5
        
Operand: (s1)
Device Item Description Setting range Set by
+0 Send channel Specifies the send channel.
• 1: Channel 1 (CH1 side)
• 2: Channel 2 (CH2 side)
1, 2 User
+1 Result of sending Used to store the result of sending with the G(P).BIDOUT instruction.
• 0: Normal
• Other than 0: Error (error code)
 System
+2 Amount of send data Specifies the amount of the data to be sent.
*1
1 or more User
• Completion device (d)
This device turns on during END processing of the scan where the G(P).BIDOUT instruction completes, and turns off during the next END processing.
• Completion status indication device (d)+1
This device turns on or off depending on the completion status of the G(P).BIDOUT instruction.
When completed successfully: The device remains off.
When completed with an error: The device turns on during END processing of the scan where the G(P).BIDOUT instruction completes, and turns off during the
next END processing.
END 0 0 END 0 END END 0 END 0
OFF
OFF
OFF
OFF
ON
ON
Sequence scan
G(P).BIDOUT instruction
Completion device (d)
1 scan
Completion of
the instruction
Completed successfully
Completed with an error
Execution of the instruction
Completion status
indication device (d)+1