Siemens SIMATIC S5 Equipment Manual

R02/92
Matching Module 4 for Absolute Encoders
7.1
Function Description
The serial actual values of an encoder with synchronous–serial interface according to RS 485 or
RS 422 are converted to
~arallel information on the encoder matchina module and are transferred
to the output memory of-the basic module.
%codel
LOOP
IN +
LOOP
OUT +
Time sequence of a read cycle
,
i
SSRS2JMSSX x x x ‘{
4
\\
x
LSS KS
IP241
Ssl
Module
LOOP
OUT+
LOOP
IN+
LOOP OUT + =
LOOP IN + =
TB
=
TBP
=
MSB
=
LSB
=
KB
=
OUTPUT “+ “ SEND CLOCK PULSE GROUP
INPUT “+” ACTUAL ENCODER VALUE
CLOCK PULSE GROUP (NUMBER OF CLOCK PULSES) parameterizable
CLOCK PULSE GROUP INTERVAL (DEFINED BY HARDWARE)
MOST SIGNIFICANT BIT
LEAST SIGNIFICANT BIT
CONTROL BIT
The encoder matching module fetches the actual encoder values by cyclic emission of a clock
pulse group (TB) and transfers them to the basic module via the output memory.
A clock pulse group is a package of single pulses.
The number of clock pulses in a clock pulse group depends on the encoder resolution.
1P 241 Equipment Manual
@SiemensA(31989, Order No,: 6ES5998-0KD21
7–1
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Siemens SIMATIC S5 Specifications

General

Product type designation	SIMATIC S5
Programming language	STEP 5
Digital inputs	Varies by model
Digital outputs	Varies by model
Analog inputs	Varies by model
Analog outputs	Varies by model
Supply voltage	24V DC
CPU Type	Varies by model
Memory	Varies by model
Digital I/O	Varies by model
Analog I/O	Varies by model
Communication	PROFIBUS
Operating Temperature	0°C to 60°C
Relative Humidity	5% to 95% (non-condensing)