6. Communication Function
Delay time of PLC scan(Tdelay_plc1)
Delay time of communication scan transmission(Tdelay_com)
Fig. 6.1.11 Relation between PLC and communication in scan time
%6- /-)-)) ;#<(4 ) ;#<(4
F)-<
;#< F -
F)-<;#<(A;#<
F2 -A2- '
--C,
-
2
,
-;#<(4;#<(A-,
-C)+
*)2-
.
TscanATscanATscanA
TscanBTscanBTscanB
Delay time of PLC scan(Tdelay_plc2)
Tcom_scanTcom_scan
PLC-A
Scan time
Scan time of
PLC-B
T2
T3
Scan time of
communication
Tcom_scan
T1