Siemens KS7 Series Specifiche Scaricare il pdf (Pagina 223)

CP 523 Using the ”SEND” and ”RECEIVE” Function Blocks

STL FB 201 Explanations

00C0 :

00C1 :L FW 242

Set pointer to base

00C2 :I 6 address +6 (byte 6)

00C3 :T FW 242

00C4 :

00C5 :DO FW 242

Read no. of message blocks in

00C6 :L PY 0 Receive message frame from the CP,

00C7 :D 1 decrement by 1,

00C8 :SLW 2 convert to number of words

00C9 : (one message block comprises 4 words)

00CA :T FW 238 and store

00CB :

00CC :L FW 242

Set pointer to base

00CD :ADD KF -4 address +2 (byte 2)

00CF :T FW 242

00D0 :

00D1 :DO FW 242

Read length of Receive

00D2 :L PW 0 message frame in the bytes from the CP,

00D3 :SRW 1 convert to number of words

00D4 :T FW 240 and store

00D5 :

00D6 :L FW 238

Subtract the number of message blocks

00D7 :-F in words from this

00D8 :T FW 244 and store

00D9 : The result of the subtraction

00DA : is the number of words

00DB : in the last message block

00DC :

00DD :L FW 238

Correct the number

00DE :SRW 2 of message blocks

00DF :I 1

00E0 :T FW 238

00E1 :

00E2 :

00E3 :L KB 0

Reset the ZLAE register

00E4 :T FW 230

00E5 :

00E6 :LW =ZANF

Load ZANF

00E7 :T FW 236 and store

00E8 :

00E9 :L FW 242

Set module address register

00EA :D 2 to CP 523 base address

00EB :T FW 242 and load into

00EC :T FW 234 module address

00ED : index register

EWA 4NEB 811 6044-02a

8-33

1 2 ... 218 219 220 221 222 223 224 225 226 227 228 ... 256 257

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Siemens KS7 Series Specifiche Pagina 223

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