S5-95U, SINEC L2 Integral Standard Function Blocks L2-SEND and L2-RECEIVE
The formal operands that have to be specified when the standard function blocks are used are
explained in Tables 5-4 and 5-5.
Table 5-4. Formal Operands: Significance of the Parameters Used with L2-SEND (FB 252)
Parameter
A-NR: KY x,
y
Significance
Parameter x is irrelevant. The y parameter represents the job
number; y = 1 to 31, 33 to 54, 64, 200
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QTYP: KS xx
xx=DB, FY for a direct parameter setting
xx=YY for an indirect parameter setting
DBNR: KY 0,
y
The data block number containing the data to be transmitted
y = 2 to 255 (y is irrelevant if the start of the source data area
QANF is in the flag area)
QANF: KF x
Start of the source data area (DW number or FY number)
x = 0 to 255 (DW) or
x = 0 to 254 (FY)
QLAE: KF x Length of the source data area
(DW: words; FY: bytes)
x = 1 to 125 (DW) or
x = 1 to 250 (FY)
Table 5-5. Formal Operands: Significance of the Parameters Used
with L2-RECEIVE (FB 253)
Parameter
A-NR: KY x, y
Significance
Parameter x is irrelevant. The y parameter represents the job
number; y = 1 to 31, 33 to 54, 164, 133 to 154, 164, 200, 202
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ZTYP: KS xx
xx=DB, FY for a direct parameter setting
xx=YY for an indirect parameter setting
DBNR: KY 0, y
The data block number to contain the received data
y = 2 to 255 (y is irrelevant if the start of the destination data area
ZANF is in the flag area)
ZANF: KF x
Start of the destination data area (DW number or FY number)
x = 0 to 255 (DW) or
x = 0 to 254 (FY)
ZLAE: KF x
Length of the destination data area (DW or FY)
(DW: words; FY: bytes)
x = -1 “wildcard length”
As much data is accepted as the transmitter delivers.
EWA 4NEB 812 6112-02
5-3
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