发表于:2006-07-07 09:52:00
楼主
这是一个s7-300的一个子程序,读取DP标准从站的连续数据和向DP标准从站写连续数据
我看不懂啊
cpu314-2DP连接2个MASTERDRIVES CBP和4个MICROMASTER 4
有兄弟告诉我,这段程序的意思吗?
ON M 255.1
O M 255.1
= L 0.0
A L 0.0
BLD 102
= DB6.DBX 0.2
A L 0.0
BLD 102
= DB6.DBX 13.1
A L 0.0
JNB M001
CALL "DPWR_DAT"
LADDR :=W#16#100
RECORD :=P#DB6.DBX 0.0 BYTE 12
RET_VAL:=MW150
M001: A L 0.0
BLD 102
= DB6.DBX 0.3
A L 0.0
BLD 102
= DB6.DBX 13.2
A L 0.0
JNB M002
CALL "DPWR_DAT"
LADDR :=W#16#10C
RECORD :=P#DB6.DBX 12.0 BYTE 12
RET_VAL:=MW152
M002: A L 0.0
BLD 102
= DB6.DBX 13.4
A L 0.0
BLD 102
= DB6.DBX 0.4
A L 0.0
JNB M003
CALL "DPWR_DAT"
LADDR :=W#16#118
RECORD :=P#DB6.DBX 24.0 BYTE 12
RET_VAL:=MW154
M003: A L 0.0
BLD 102
= DB6.DBX 13.5
A L 0.0
JNB M004
CALL "DPWR_DAT"