Counter Instructions - Siemens CPU 412-1 Instruction Manual

Counter Instructions

The count value must be in ACCU1-L in the form of a BCD number (0 - 999).
In- In-
struc- struc-
Address ID Address ID
tion
S C f Presetting of counter on edge
C [e] change from "0" to "1"
Counter para.
R C f Reset counter to "0"
C [e] when RLO = "1"
Counter para.
CU C f Increment counter by 1 on edge
C [e] change from "0" to "1"
Counter para.
Status word for: S, R, CU
Instruction evaluates:
Instruction affects:
+ Plus time required for loading the address of the instruction (see page 20)
1)
With direct instruction addressing Counter No.: 0 to 255
S7-400 Instruction List
A5E00267845-01
Length Length
in in
Description Description
Words
1)
1
2
1)
1
2
1)
1
2
BR CC1
– –
– –
Execution Time in ms Execution Time in ms
CPU 412 CPU 414
/2 0.2 0.12
0.4+ 0.12+
0.2+ 0.12+
/2 0.2 0.12
0.4+ 0.12+
0.2+ 0.12+
/2 0.2 0.12
0.2+ 0.12+
0.2+ 0.12+
CC0 OV OS
– – –
– – –
Counter Instructions
CPU 416 CPU 417
0.08 0.06
0.08+ 0.06+
0.08+ 0.06+
0.08 0.06
0.08+ 0.06+
0.08+ 0.06+
0.08 0.06
0.08+ 0.06+
0.08+ 0.06+
OR STA RLO
– – Yes
0 – –
/FC
–
0
45