Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1676

■Applicable devices
Operand Bit
X, Y, M, L,
SM, F, B, SB,
FX, FY
*1
(U) 

(s1)
(s2) 
*2

(d)
*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.
■Control data
Operand: (s1)
Device Item
+0 Send channel
+1 Result of sending
+2 Amount of send data
*1 The amount of send data must be set in units as specified in the engineering tool. For word specification, set the number of words. For
byte specification, set the number of bytes.
20 SERIAL COMMUNICATION INSTRUCTIONS
1674
20.1 Sending Data Using the On-Demand Function
Word
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
*3
 
*4
 
*4
 
*5
 
Description
Specifies the send channel.
• 1: Channel 1 (CH1 side)
• 2: Channel 2 (CH2 side)
Used to store the result of sending with the G(P).ONDEMAND instruction.
• 0: Normal
• Other than 0: Error (error code)
Specifies the amount of the data to be sent.
Double word
U\G, J\, Z LT, LST,
U3E\(H)G LC
  
  
  
  
*1
Indirect Constant
specification
LZ K, H E
   
   
   
   
Setting range
1, 2

1 or more
Others
(U)
$
 
 
 
 
Set by
User
System
User