16 ETHERNET INSTRUCTIONS
16.3 Fixed Buffer Communications Instructions
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16
■Applicable devices
*1 FX and FY cannot be used.
*2 FD cannot be used.
*3 T, ST, C, and FD cannot be used.
■Control data
■Receive data
*1 This setting range is applicable when the network type is "Q-compatible Ethernet".
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) GP.BUFRCV
ZP.BUFRCV
(s1)
*1
*2
(s2)
*2
(d1)
*2
(d2)
*1
*3
Operand: (s2)
Device Item Description Setting range Set by
+0 System area
+1 Completion status The completion status is stored upon completion of the instruction.
• 0: Completed successfully
• Other than 0: Completed with an error (error code)
System
Operand: (d1)
Device Item Description Setting range Set by
+0 Receive data length The length of the data read from the fixed buffer
receive data area is stored.
(The data length is represented in words or bytes
according to the procedure of fixed buffer
communications.)
With procedure (binary):
Number of words
1 to 5113
(1 to 1017)
*1
System
With procedure (ASCII):
Number of words
1 to 2556
(1 to 508)
*1
Without procedure (binary):
Number of bytes
1 to 10238
(1 to 2046)
*1
+1 to + Receive data The data read from the fixed buffer receive data areas is stored sequentially in
ascending order of addresses.
System