Siemens SIMATIC S7-200 System Manual page 98

S7-200 Programmable Controller System Manual
Example: Network Read and Network Write Instructions
84
Network 1 //On the first scan, enable the
//PPI master mode
//and clear all receive and transmit buffers.
LD SM0.1
MOVB 2, SMB30
FILL +0, VW200, 68
Network 2 //When the NETR Done bit (V200.7)
//is set and 100 cases have been
//packed:
//1. Load the station address of
// case packer #1.
//2. Load a pointer to the data in
// the remote station.
//3. Load the length of data to be
// transmitted.
//4. Load the data to transmit.
//5. Reset the number of cases packed
// by case packer #1
LD V200.7
AW= VW208, +100
MOVB 2, VB301
MOVD &VB101, VD302
MOVB 2, VB306
MOVW +0, VW307
NETW VB300, 0
Network 3 //When the NETR Done bit is set,
//save the control data from
//case packer #1.
LD V200.7
MOVB VB207, VB400