@*+'%<<%'()*
Section 2-2
&-
Note
1. If two or more Special I/O Units are assigned the same Machine Number, a fatal
error “Unit No. Duplication Error” (in the PLC-CPU) will be generated (A40113
will turn ON) and the PLC will not operate.
2. The High-speed Counter Unit is allocated the words for 4 Units. If you use Spe-
cial I/O Units that are allocated more than 100 DM-words and 10 CIO-words,
like the CS1W-CT021/CT041 High-speed Counter Unit, you should make sure
that no memory overlapping occurs. If the Machine Number for the High-speed
Counter Unit is set to ‘n’ the Machine Number of the consecutive Special I/O
Unit should be set to ‘n+4’, in order to avoid memory overlapping. In case two
or more Special I/O Units have set Machine Numbers that cause an overlap-
ping of allocated memory a fatal error “Unit No. Duplication Error” (in the PLC-
CPU) will be generated (A40113 will turn ON) and the PLC will not operate.
3. Besides the memory that is allocated to the High-speed Counter Unit in the
Special I/O Unit DM Area, for every Counter additional memory can be allo-
cated in DM/EM. This extra allocated amount of memory is used to make the
Counter Specific Settings related to Range or Comparison Mode. Memory is
allocated by specifying an Indirect Address for every Counter in the Special I/
O Unit DM Area. For details about Indirect Addressing refer to 4-2-2
2-2
Installation
!Caution
Leave the protective label on top of the Unit as long as the Unit is not mounted
and wired completely, in order to prevent wire clippings or other materials from
getting inside the Unit. When the mounting and wiring has been completed, the
label must be removed to allow air circulation and heat radiation.
!Caution
Be sure to turn OFF the power supply to the PLC before installing or removing
Units or connecting or disconnecting connectors.
Note
Before you start mounting the Unit to the backplane, make sure that the Counter
Type switch, at the back of the Unit, is set in the appropriate position.
Use the following procedure to mount CS1W-CT021/CT041 High-speed Counter
Units to the backplane.
1, 2, 3…
1. Hook the top of the High-speed Counter Unit into the slot on the Backplane and
rotate the Unit downwards as shown in the following figure.
Hook
Backplane
W902-E2-03.book Seite 30 Donnerstag, 7. Oktober 2004 2:06 14
Summary of Contents for CS1W-CT021
Page 1: ...OPERATION MANUAL High speed Counter Units CS1W CT021 CS1W CT041 Cat No W902 E2 03...
Page 3: ...W902 E2 03 book Seite iv Donnerstag 7 Oktober 2004 2 06 14...
Page 5: ...W902 E2 03 book Seite vi Donnerstag 7 Oktober 2004 2 06 14...
Page 39: ...W902 E2 03 book Seite 24 Donnerstag 7 Oktober 2004 2 06 14...
Page 59: ...A 2 Section 2 3 W902 E2 03 book Seite 44 Donnerstag 7 Oktober 2004 2 06 14...
Page 155: ...4 Section 4 6 W902 E2 03 book Seite 140 Donnerstag 7 Oktober 2004 2 06 14...
Page 199: ...G W902 E2 03 book Seite 184 Donnerstag 7 Oktober 2004 2 06 14...