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2. operand
Operand
Function
S1
The first clock soft component address
S2
The second clock soft component address
S3
The third clock soft component address
S4
PLC real time clock information first address
D2
The compare result first address
3. suitable soft component
Operand
Word
S1
S2
S3
S4
Bit
Operand
D
*Notes: D includes D, HD; TD includes TD, HTD; CD includes CD, HCD, HSCD, HSD;
DM includes DM, DHM; DS includes DS, DHS.
M includes M, HM, SM; S includes S, HS; T includes T, HT; C includes C, HC.
Description
X0
TRD
D30
TCMP
M0
D20
D21
M1
D20
D21
M2
D20
D21
Even X0=OFF to stop instruction TCMP, M0~M2 still keep the
state before X0 become OFF.
TRD will read the present clock information in D30~D36 (year, month, day, hour, minute,
second, week).
X0 from OFF to ON, TCMP worked. Compare the three registers starting from S4 to three
registers S1, S2, S3 (year, month, day). When S1, S2, S3 is larger than S4 clock, M0 is ON.
When S1, S2, S3 is equal to S4 clock, M1 is ON. When S1, S2, S3 is smaller than S4 clock,
M2 is ON.
*
*
D
FD
TD
CD
●
●
●
●
●
●
●
●
System
*
X
Y
M
●
●
S1·
S2·
S3·
D20
D21
D22
D22
D30
D31
D22
D30
D31
D22
D30
D31
Model
16 bits, BIN
16 bits, BIN
16 bits, BIN
16 bits, BIN
bit
System
*
*
DX
DY
DM
●
●
●
●
●
●
●
●
●
●
●
●
*
*
*
S
T
C
Dn.m
●
S4·
D·
D30
M0
D32
D32
D32
175
Constant
Module
*
DS
K /H
ID
●
●
●
●
●
●
●
●
QD
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