HEIDENHAIN TNC 306 Technical Manual - Manual (Page 310)

7-20
TNC 416/TNC 406/TNC 306 Program creation 3/2000
2.4.2 Counters
There are 32 counters available in the PLC. Each of these counters is controlled by special markers
with the symbol C. After setting a marker from the range C0 to C31 the counter is loaded with the
value from machine parameter MP4120.X. The marker range C48 to C79 indicates whether the
count has been completed or not. The marker range C96 to C127 is used to start the counter
(counter release pulse).
Example: Logic diagram for counter C1
Contents of machine parameter MP4120.1 = 10 (PLC cycles)
C1
C49
C97
C0 C48 C96 MP4120.0
C1 C49 C97 MP4120.1
C2 C50 C98 MP4120.2
C3 C51 C99 MP4120.3
C4 C52 C100 MP4120.4
C5 C53 C101 MP4120.5
C6 C54 C102 MP4120.6
C7 C55 C103 MP4120.7
C8 C56 C104 MP4120.8
C9 C57 C105 MP4120.9
C10 C58 C106 MP4120.10
C11 C59 C107 MP4120.11
C12 C60 C108 MP4120.12
C13 C61 C109 MP4120.13
C14 C62 C110 MP4120.14
C15 C63 C111 MP4120.15
C16 C64 C112 MP4120.16
C17 C65 C113 MP4120.17
C18 C66 C114 MP4120.18
C19 C67 C115 MP4120.19
C20 C68 C116 MP4120.20
C21 C69 C117 MP4120.21
C22 C70 C118 MP4120.22
C23 C71 C119 MP4120.23
C24 C72 C120 MP4120.24
C25 C73 C121 MP4120.25
C26 C74 C122 MP4120.26
C27 C75 C123 MP4120.27
C28 C76 C124 MP4120.28
C29 C77 C125 MP4120.29
C30 C78 C126 MP4120.30
C31 C79 C127 MP4120.31