Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 511)

9 Application Instructions API 150-199
DVP-PLC Application Manual 9-39
API Mnemonic Operands Function
160 TCMP P Time Compare
Controllers
ES/EX/SS SA/SX/SC EH/SV
Bit Devices Word Devices Program Steps Type
OP X Y M S K H KnX KnY KnM KnS T C D E F
S
1
* * * * * * * * * * *
S
2
* * * * * * * * * * *
S
3
* * * * * * * * * * *
S * * *
D * * *
TCMP, TCMPP: 11 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
S
1
: “Hour” for comparison S
2
: “Minute” for comparison S
3
: “Second” for comparison S: Current time of
RTC D: Comparison result
Explanations:
1. Range of S
1
: K0 ~ K23; range of S
2
and S
3
: K0 ~ K59
2. S will occupy 3 consecutive devices; D will occupy 3 consecutive points.
3. See the specifications of each model for their range of use.
4. S
1
, S
2
and S
3
are compared with the present values of “hour”, “minute” and “second” starting from S. The
comparison result is stored in D.
5. S is the “hour” of the current time (K0 ~ K23) in RTC; S + 1 is the “minute” (K0 ~ K59) and S + 2 is the “second”
(K0 ~ K59).
6. S is read by TRD instruction and the comparison is started by TCMP instruction. If S exceeds the range, the
program will regard this as an operation error and the instruction will not be executed, M1067 and M1068 = On
and D1067 will record the error code 0E1A (hex).
Program Example:
1. When X10= On, the instruction will compare the current time in RTC (D20 ~ D22) with the set value 12:20:45
and display the result in M10 ~ M12. When X10 goes from On to Off, the instruction will not be executed, but
the On/Off stauts prior to M10 ~ M12 will remain.
2. Connect M10 ~ M12 in series or in parallel to obtain the result of ≧, ≦, and ≠.
X10
M10
TCMP K12 K20 K45 D20 M10
M11
M12
ON when 12:20:45
ON when 12:20:45
ON when 12:20:45
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