
B-63983EN/02 4.LADDER LANGUAGE
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4.10.10 NUME (BCD Definition of Constant: SUB 23)
Defines constants, when required. In this case, constants are defined
with this instructions. The value type in this instruction is BCD.
Format
Fig. 4.10.10 shows the ladder format and Table 4.10.10 shows the
mnemonic format.
NUME
SUB 23
¡¡¡¡
¡¡¡¡
CT
¡¡¡¡
.
¡
BYT
¡¡¡¡
.
¡
Control condition
Instruction
Constant
Constant output
address
Fig. 4.10.10 Format of NUME instruction
Table 4.10.10 Mnemonic of NUME instruction
Mnemonic format Status of operation result
Step
number
Instruction
Address
No.
Bit No. Remarks ST3 ST2 ST1 ST0
1RD ¡¡¡¡ .¡ BYT BYT
2 RD. STK ¡¡¡¡ .¡ ACT BYT ACT
3 SUB 23 NUME instruction
4(PRM) ¡¡¡¡ Constant
5(PRM) ¡¡¡¡ Constant output address
Control conditions
(a) Specify the number of digits of a constant. (BYT)
BYT=0: Constant is BCD two digits long.
BYT=1: Constant is BCD four digits long.
(b) Execution command (ACT)
ACT=0: The NUME instruction is not executed.
ACT=1: The NUME instruction is executed.