Siemens SIMATIC S5 Manual page 103

S5-95U, SINEC L2
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
QTYP: KS
DBNR: KY
QANF: KF
QLAE: KF
Table 5-5. Formal Operands: Significance of the Parameters Used
Parameter
A-NR: KY x, y
ZTYP: KS xx
DBNR: KY 0, y
ZANF: KF x
ZLAE: KF x
EWA 4NEB 812 6112-02
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
Parameter x is irrelevant. The y parameter represents the job
x,
number; y = 1 to 31, 33 to 54, 64, 200
y
xx=DB, FY for a direct parameter setting
xx
xx=YY for an indirect parameter setting
The data block number containing the data to be transmitted
0,
y = 2 to 255 (y is irrelevant if the start of the source data area
y
QANF is in the flag area)
Start of the source data area (DW number or FY number)
x
x = 0 to 255 (DW) or
x = 0 to 254 (FY)
Length of the source data area
x
(DW: words; FY: bytes)
x = 1 to 125 (DW) or
x = 1 to 250 (FY)
with L2-RECEIVE (FB 253)
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
xx=DB, FY for a direct parameter setting
xx=YY for an indirect parameter setting
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)
Start of the destination data area (DW number or FY number)
x = 0 to 255 (DW) or
x = 0 to 254 (FY)
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.
Significance
Significance
5-3