Siemens SIMATIC S5 Equipment Manual

R 02/92
Matching Module 4 for Absolute Encoders
7.3.3 Select Direction of Rotation (for Gray or Binary Code)
Direction of rotation right ( CW = clockwise)
When the encoder rotates in a “right-hand” direction (i.e., clockwise with the shaft facing the ob-
server), incrementing actual values are provided if:
S3
Switch S3
II
Direction of rotation left ( CCW = counterclockwise)
When the encoder rotates in a “left–hand” direction (i.e., counterclockwise with the shaft facing
the observer), incrementing actual values are provided if:
S3
Switch S3
11
With a resolution of more then 20 bits, a change to counterclockwise rotation
is not possible, as the sign bit becomes “1” (internal evaluation in twos’
complements).
1P 241 Equipment Manual
@ Siemens AG 1989, Order No.: 6ES5 998-0KD21
7–9
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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)