1718
20 SERIAL COMMUNICATION INSTRUCTIONS
20.14 Reading User Frames
■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.
■Control data
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 Dummy 0
+1 Result of reading Used to store the result of sending with the G(P).GETE instruction.
•0: Normal
• Other than 0: Error (error code)
System
+2 Specified frame number Specifies the user-registered number. 1000 to 1199 User
+3 Allowable number of
bytes
Specifies the number of bytes storable in (s2), of the registered data of the read user
frame.
1 to 80 User
Number of registered
bytes
Used to store the number of bytes of the registered data of the read user frame.
• 1 to 80: Number of bytes of registered data
System