4-4
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
The control word is the first word of each parameter block. The layout of the
control word is shown below.
The bit numbering is specified for the data type
²
word.
²
-- The low byte of word
²
n
²
has the byte address
²
n + 1.
²
-- The high byte of word
²
n
²
has the byte address
²
n.
²
15
X
14
X
13
X
12
X
11 10 9 8 7
0
6 5 4 3 2 1 0
Byte n
Start/stop byte
Byte n+1
Coordination byte
Operating mode
Start/stop byte enable
Parameter block number
Consistency bit
Parameter block subnumber
X = Disregard
Table 4--2 shows the permissible allocations of the control word.
Table 4-2
Allocation of the control word for parameterization
Bit
Address
Description
Allocation
0 to 3
Identifier
for the set operating mode
0001:
Pulse counter operating mode
0010:
Period duration measurement
operating mode
0011:
Timer operating mode
0100:
Positioning operating mode
4 to 5
Number
of the current parameter block
01:
Parameter block 1
10:
Parameter block 2
11:
Parameter block 3
6
Consistency bit
-- Only with parameterization via
direct I/O accesses
-- Not applicable for parameterization
via SFC 55
0:
Write parameter block
1:
Accept parameter block via CM35
7
Start/stop byte enable
0:
Evaluate parameter data
1:
Evaluate start/stop byte
Layout of the
control word
Data Communication with the CM35
Summary of Contents for SIMATIC CM35
Page 1: ...SIMATIC Counter Module CM35 Manual Release 06 2000 ...
Page 9: ...vi CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Table of Contents ...
Page 10: ...1 1 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Product Overview 1 ...
Page 20: ...2 1 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Function Description 2 ...
Page 23: ...2 4 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Function Description ...
Page 47: ...3 24 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Commissioning ...
Page 48: ...4 1 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Data Communication with the CM35 4 ...
Page 70: ...5 1 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Pulse Counter Operating Mode 5 ...
Page 98: ...7 1 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Timer Operating Mode 7 ...
Page 112: ...8 1 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Positioning Operating mode 8 ...
Page 131: ...8 20 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Positioning Operating mode ...
Page 133: ...A 2 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Literature ...
Page 134: ...B 1 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 EC Declaration of Conformity B ...
Page 135: ...B 2 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 EC Declaration of Conformity ...
Page 141: ...Glossary 6 CM35 Counter Module 4 J31069 D0416 U001 A5 7618 Glossary ...