Siemens SIMATIC S7-200 System Manual page 382

SIMATIC Instructions
INTERRUPT 0
Network 1
SMB86
==B
16#20
INTERRUPT 1
Network 1
SM0.0
INTERRUPT 2
Network 10
SM0.0
Figure 9-23
9-194
Receive complete
MOV_B
interrupt.
EN ENO
10 IN OUT SMB34
If receive status shows
ATCH
receive of end character,
EN ENO
then attach a 10 ms timer
to trigger a transmit, then
1 INT
return.
10 EVNT
If receive complete for
RETI
any other reason, then
RCV
start a new receive.
EN ENO
NOT
VB100 TBL
0 PORT
Timer interrupt.
DTCH
Detach timer interrupt.
EN ENO
10 EVNT
XMT
EN ENO
Transmit message back
VB100 TBL to user on port 0.
0
PORT
Transmit complete
RCV
interrupt.
EN
ENO
Enable another receive.
TBL
VB100
0 PORT
Example of Transmit Instruction for SIMATIC LAD, STL, and FBD (continued)
Network 1
LDB=
MOVB
ATCH
CRETI
NOT
RCV
Network 1
LD
DTCH
XMT
Network 10
LD
RCV
S7-200 Programmable Controller System Manual
SMB86, 16#20
10, SMB34
2, 10
VB100, 0
SM0.0
10
VB100, 0
SM0.0
VB100, 0
A5E00066097-02